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+7

James Spencer

For individuals and parents seeking straightforward, manual-entry financial tracking and currency conversion tools without subscription overhead.

10apps4.0(32.3K) Multi-theme

Snapshot

Who is James Spencer?

Providing practical financial utilities and family-oriented budgeting tools for everyday personal money management.

Target audience

IndividualsParents seeking straightforwardManual-entry financial tracking

Top rival

Kaspre Invest

Other rivals

Portfolio

Free 7
10
apps
Finance5
Utilities2
Games1
Productivity1

Last updated

Currency+ (Currency Converter)

v2.10.2

9mo ago

Maintenance

Publisher DNA

What defines James Spencer?

Publisher DNA

Primary focus

Personal finance utilities and family budgeting tools

Scale

indie

Target audience

Individuals and parents seeking straightforward, manual-entry financial tracking and currency conversion tools without subscription overhead.

Signature Patterns

  • •Heavy concentration in the Finance category (50% of portfolio).
  • •Preference for utility-based tools with manual data entry rather than automated bank syncing.
  • •Monetization strategy includes a mix of free, freemium, and one-time paid tiers.
  • •Visual design emphasizes functional, calculator-style interfaces over modern minimalist aesthetics.
Maintenance

Portfolio momentum

The publisher is in a maintenance phase, with one update in the last six months and 70% of the portfolio currently classified as abandoned.

Last release 55d agoActive apps 3Abandoned 7

Portfolio

What does James Spencer ship?

Apps

10 apps analysed

Currency+ (Currency Converter) icon
Currency+ (Currency Converter)

Check and track exchange rates and compare the cost to send globally.

4.7(22.2K)
iAllowance (Chores Allowances) icon
iAllowance (Chores Allowances)

The simplest way to track your spending and analyze your habits.

4.4(2.3K)

Privacy-friendly as it does not require banking integration

  • One-time purchase model ($2.99) avoids subscription fatigue

Distributed across 7 markets, strongest in Americas.

Based on 3 of 10 apps with localized market data, more coverage rolling in as scans complete · last scanned .

Americas (2)

  • United States3 / 3
  • Mexico1 / 3

Europe (4)

  • France1 / 3
  • Germany1 / 3
  • Netherlands1 / 3
  • Spain1 / 3

Asia-Pacific (1)

  • Japan1 / 3

Core markets (3/3 apps)

United States

Rivals

Who does James Spencer compete with?

The rivals identified

Nemeses(3)

Cristinel Bontas

known forMargin/Selling/Cost Calculator

1 app4.6Finance

Both applications target business professionals requiring quick margin and markup calculations, creating direct competition for the same utility-focused user base.

First NestEgg

known forMy First Nest Egg

1 app4.5Finance

Both apps target parents managing household chores and financial literacy for children without requiring real-world banking integration.

JRustonApps B.V.

known forMy Currency Converter & Rates

2 apps4.9Finance

Both apps target international travelers and finance users with currency conversion tools, creating direct competition for the same user base.

Contenders(27)

AppNextDoor Labs

known forMargin and Markup Calculator +

1 app3.9Finance

Both applications target business owners and sales professionals with profit margin and markup calculation tools, creating direct competition for the same user base.

Christopher Mamaril

known forWholesale/Retail Calculator

1 app4.7Finance

Both applications target small business owners and retail managers with identical core functionality for margin and markup calculations, creating direct competition for the same user base.

Crazynova

known forMXN Peso Exchange Rates

1 app4.7Finance

Both apps target users requiring currency conversion, with the rival focusing on USD to MXN remittances while Currency+ provides a broader utility for 150 currencies.

Do More Mobile

known forCurrency Foreign Exchange Rate

2 apps4.7Finance

This app targets the same traveler base but adds platform-specific optimizations like iPad support and advanced widgets.

Gruffydd Johnston

known forAllowance Tracker - Acorn

1 app4.9Finance

Both apps target parents managing household chores and allowances, directly competing for the same family-management use case.

Happy Moose Apps

known forAllowance Tracker for Kids

1 app4.4Finance

Both apps target parents seeking simple, non-banking-linked tools for managing household allowances and chore tracking.

Jeffrey Grossman

known forCurrency

1 app4.8Finance

Both apps target international travelers and business professionals with currency conversion tools, competing for the same user base on iOS.

Kyle Ashby

known forDigital Piggy Bank

1 app5.0Finance

Both apps target parents managing household chores and allowances without bank integration, creating direct competition for the same user segment.

LUTHAI INTERNATIONAL

known forFamily Piggy Bank

1 app1.0Finance

Users report: Both apps target parents managing children's financial literacy through digital tracking tools, competing for the same household management budget.

Mezhevikin Aleksei

known forCurrency converter offline

1 appFinance

Both apps target international travelers and business users with free currency conversion tools. They compete directly for users seeking reliable financial utilities on iOS.

Mia Benn

known forSimple Profit Calculator

1 app4.6Finance

Both applications target business owners and entrepreneurs requiring on-the-go margin and revenue analysis, creating direct competition for the same user base.

Ondrej Kvasnovsky

known forGoldy wallet

1 app4.9Finance

Both apps target parents managing household finances and chores, competing for the same demographic of families seeking digital financial literacy tools.

Oval Software Oy

known forProfit & Margin Calculator

1 app5.0Finance

Both applications target business owners and entrepreneurs with paid financial utilities for calculating profit and margin metrics.

Patrick van der Ploeg

known forAllowance Tracker Family

1 app5.0Finance

Both apps target parents managing household chores and allowances, competing for the same user base seeking digital alternatives to manual tracking.

Patryk Madaj

known forMargin & Markup Calculator

1 app0.0Finance

Both applications target business owners and retail managers requiring profit margin calculations, with the rival offering a broader feature set including VAT and break-even analysis.

Paul Boyce

known forQuick Profit

1 app4.4Finance

Quick Profit targets the same retail and business audience as Margin+ by offering a free, ad-supported tool for margin and markup calculations. It competes directly by removing the $2.99 barrier to entry that Margin+ maintains.

Priotecs IT

known forPockey - Pocket Money Manager

1 app4.3Finance

Both apps target parents managing household chores and allowances, competing for the same user base seeking a digital ledger for children's financial literacy.

Proper Bits

known forCurrency Converter Worldwide

1 app4.7Finance

Both apps target international travelers and business users requiring conversion for over 150 currencies and Bitcoin. They compete directly on utility for managing foreign finances and travel spending.

Raphael Odermatt

known forCurrency - Exchange Rates

1 app4.7Finance

Both apps target international travelers and business professionals with calculator-integrated interfaces for currency conversion, creating direct competition for the same user base.

Renowne

known forCost Margin Calculator

1 app3.6Finance

Both applications target small business owners and entrepreneurs requiring margin and markup analysis, competing directly for the same utility-focused user base.

Space Node Co.

known forCurrency · Exchange Rate

1 app4.6Finance

Both apps target international travelers and business users by providing real-time conversion for over 150 currencies and integrated financial tracking tools.

Stage Coding

known forMarkup Calculator - CalCon

1 app3.3Finance

Both applications target business professionals requiring profit margin and markup calculations, creating direct feature overlap for the same user base.

Stan Lemon

known forDollar & Sense - Family Chores

1 app5.0Finance

Both apps target families managing chores and allowances without bank integration, creating a direct conflict for parents seeking simple, privacy-focused financial literacy tools.

Steamtown Media

known forMar-Genie Margin Calculator

1 app3.6Finance

Both applications target business professionals needing margin and markup calculations, creating direct competition for users seeking financial utilities on mobile platforms.

Viacheslav Nehria

known forMoney Converter - Cashmate

1 app4.7Finance

Both apps target international travelers and business users with free, offline-capable currency conversion tools that prioritize quick financial calculations.

Vitalii Gryniuk

known forCurrency converter: Exchange

1 app4.6Finance

Both applications target international travelers and business professionals with real-time currency conversion tools, creating direct competition for the same user base.

VooZu Promotions

known forProfit Story

1 app3.8Finance

Both applications target retail and business professionals with identical $2.99 pricing for margin and markup calculations.

Same space(31)

Kaspre Invest

known forCurrency Converter Plus

1 app4.8Finance

This app competes for the same traveler segment by offering a broader asset library including 180+ currencies and precious metals.

Acorns

known forAcorns Early: Kids Money App

1 app4.6Finance

Acorns Early targets the same family financial literacy space by combining chore lists with educational content and real-world debit card practice.

Alan Mrvica

known forUnit Converter - Best Unit App

1 app4.5Finance

This app targets a similar professional audience but expands the scope beyond currency into a 12,700+ unit conversion library.

Alexander Lee

known forVibe Exchange - Live Rates

1 app0.0Finance

This app targets travelers with a similar offline-first approach but uses a subscription model for advanced features.

Alexander Rylskov

known forExchange Rates Converter

1 app4.8Finance

This app targets the same currency-focused audience but utilizes a subscription-based trial model for monetization.

Applorium

known forFinancial Calculator: Percent

1 app4.7Finance

Serves as a broad utility alternative for users needing more than just margin math, anchored by its 40-calculator suite.

Beijing Free Calculator Technology Co.

known forCalculator with History +

1 app4.7Finance

Replaces the native calculator for users who need persistent history tracking, which Margin+ lacks.

BusyKid

known forBusyKid

1 app3.7Finance

BusyKid serves the same chore-based allowance market, adding an investment module to teach children about stock market participation.

Daniil Dolog

known forCurrency Converter⁺

1 app4.6Finance

This app targets the same traveler demographic but adds cross-device synchronization to improve retention for power users.

Dayspring Technologies

known forGoodbudget Budget Planner

1 app4.6Finance

Goodbudget targets the same household coordination audience, using a virtual envelope system that mirrors the ledger-based tracking of iAllowance.

Dimitris Economou

known forExchange Rates (fxrate.io)

1 app5.0Finance

This app differentiates itself from the source by providing a commission estimator to reveal hidden bank fees.

DYNAMIQ

known forLive rates+

1 app0.0Finance

This app targets privacy-conscious users by processing all currency data locally on the device.

gohenry

known forGoHenry by Acorns Kids Banking

2 apps4.7Finance

GoHenry by Acorns targets the same family demographic by gamifying financial literacy through missions alongside chore-based allowance payouts.

Goksel Pirnal

known forPercentage Calculator - Calc %

1 app4.8Finance

Provides a broader set of percentage-based financial tools that overlap with the core margin and markup functions of Margin+.

Graeme Pyle

known forPiggy Bank Kids - Bomad

1 app4.8Finance

Piggy Bank Kids - Bomad mirrors the virtual ledger approach of iAllowance, serving as a digital bank of mom and dad.

Greenlight Financial Technology

known forGreenlight Kids & Teen Banking

1 app4.8Finance

Greenlight targets the same family allowance market but adds a physical debit card and safety suite to automate the parent-child financial relationship.

Key Advanced

known forCurrency Exchange Rates Live

2 apps4.6Finance

This app expands into broader financial market tracking, serving as a more comprehensive alternative for investors.

Linh Phan Nhat Khanh

known forCurrency Converter No Internet

1 app0.0Finance

This app focuses on the manual entry of actual exchange rates to provide accurate, personalized conversion data for travelers.

Modak

known forModak: Kids & Teens Banking

1 app4.8Finance

Modak provides a similar automated chore and allowance system, focusing on transitioning children to real-world banking via a Visa debit card.

monkeyLabs

known forMoney Converter +

1 app4.8Finance

This app serves the same international traveler demographic by integrating expense tracking and tip calculation alongside currency conversion.

NAOYA ONO

known forEasy Profit Calculator

1 app0.0Finance

Serves retail arbitrageurs who need a quick, no-login tool for calculating profit margins on marketplace listings.

Phan Nhat Đang

known forProfit Calculator, Revenue

1 app4.5Finance

Directly competes for the same retail seller audience by focusing on profit and revenue estimation.

Photo & Video Editors - Instant Solution

known forCalConvert: Pro Calculator $€

1 app4.3Finance

This app competes for the professional user segment by bundling currency conversion within a high-utility scientific calculator.

Richard Silverman

known forAdding Machine 10Key iPhone

2 apps4.7Finance

Targets professional users who require the audit trail of a physical adding machine, similar to the precision needed in margin analysis.

Robert Pinl

known forCurrency Converter: Live Rates

1 app4.7Finance

This app aligns with the ad-free preference of the source app while focusing on a clean, offline-capable interface.

RoosterMoney

known forNatWest Rooster Money

1 app4.7Finance

NatWest Rooster Money offers a similar suite of chore tracking and allowance management tools, functioning as a bridge to prepaid debit card usage.

Tardent Apps

known forDiscount Calculator ∙ Sale Amt

1 app4.7Finance

Targets the same retail-focused audience as Margin+ but focuses specifically on discount and tax calculations.

Till Financial

known forTill: Kids & Teen Banking

1 app4.8Finance

Till provides a similar chore-based allowance system but integrates a debit card to move from a virtual ledger to real-world banking.

Tomer Arkin

known forclassic currency converter (foreign exchange rates)

1 app4.6Finance

This app serves the same traveler and business audience but relies on a legacy, manual-input approach to currency conversion.

Xilva

known forCurrency Converter Live Rates

1 app1.0Finance

This app serves as a legacy, manual-conversion tool for users who avoid modern data-tracking and cloud-sync requirements.

You Need A Budget

known forYNAB

1 app4.8Finance

YNAB serves the same household financial management audience but focuses on adult-level zero-based budgeting rather than child-centric chore tracking.

New entrants(3)

Hangik Lee

known forCurrencyIQ : Exchange Rates

1 app0.0Finance

This app provides deeper financial context by explaining why rates move, targeting more analytical travelers.

Meltem Intepeler

known forSales Profit Calculator

1 app0.0Finance

Targets e-commerce sellers needing to model margins across specific platforms like Amazon and Etsy, moving beyond simple margin math.

Michal Ferak

known forCurrency Converter: Dami

1 app0.0Finance

This app serves the same traveler audience by emphasizing speed and offline functionality without ads or subscriptions.

The Analyst's Read

The bottom line on James Spencer

Bottom line

James Spencer is a legacy-focused indie developer with a strong reputation for reliable, high-rated finance utilities. While the portfolio shows signs of consolidation, the high weighted rating of 4.61★ indicates a loyal user base that values the publisher's straightforward, non-subscription approach to money management.

Frequently asked questions

How many apps does James Spencer publish?
James Spencer has 10 apps tracked by Marlvel, primarily in the Finance category.
What kind of apps does James Spencer make?
James Spencer's portfolio is concentrated in Finance and Utilities, with an average rating of 4.0/5 across rated apps.
What is James Spencer's top app?
By review volume across the portfolio, Currency+ (Currency Converter) is James Spencer's best-known app tracked by Marlvel.
In how many countries are James Spencer's apps available?
Marlvel has tracked James Spencer's apps across 7 countries.

What fed this analysis

Apps analyzed:
10
With full intel:
2
With overview:
10
Website scraped:
yes
Social presence:
yes

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by James Spencer, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “James Spencer intelligence.” Updated 2026-04-24. https://marlvel.ai/publishers/james-spencer

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Data licensed under CC-BY-NC 4.0