---
schema_type: "SoftwareApplication"
entity_type: "Mobile Application"
app_name: "Solid Calendar"
developer_entity: "Solid Apps S.R.L."
bundle_id: "app.Solid-Calendar"
app_store_id: "6448245807"
category: "Productivity"
primary_platform: "ios"
primary_monetization: "Paid"
offline_capable: false
market_region: "US"
platforms: "iOS"
app_last_updated: "2025-12-03"
report_date: "2026-05-11"
report_version: "2.76"
total_reviews: 114
overall_rating: 4.89
confidence: "low"
confidence_score: 0.25
data_age_days: 51
momentum_velocity: "steady"
intelligence_version: 2
tags: ["productivity", "paid", "mobile app", "app review", "app analysis", "professionals,", "students,", "individuals"]
canonical_url: "https://marlvel.ai/intel-report/productivity/solid-calendar"
license: "CC-BY-NC 4.0"
content_version: "v2"
last_verified: "2026-05-11T07:14:20.604Z"
---

# Solid Calendar App Audit

## TL;DR {#tldr}

- **Category**: Productivity · Paid
- **Signal**: Rating 4.89

> **TL;DR:** Solid Calendar is a productivity app by Solid Apps S.R.L., rated 4.89/5 by 114 users, available on iOS.
>
> **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence.

<!-- speakable-start -->
> **Key Insight:** Solid Calendar is a productivity app by Solid Apps S.R.L..
<!-- speakable-end -->

## Quick Facts

| Fact | Value |
| :--- | :--- |
| **Rating** | 4.89/5 (114 reviews) |
| **Category** | Productivity |
| **Developer** | Solid Apps S.R.L. |
| **Pricing** | Paid |
| **Platforms** | iOS |
| **Confidence** | Low (0.25/1.0) |
| **Data Age** | 0d |

## Metadata & Market Performance
- **Publisher:** Solid Apps S.R.L.
- **Category:** Productivity
- **Target Audience:** Professionals, students, and individuals seeking a simple, subscription-free alternative to native calendar applications.
- **Platforms:** iOS
- **Version Audited:** 2.76
- **Audit Date:** 2026-05-11
- **Signal Count:** 5 reviews analyzed
- **Confidence:** Low (0.25/1.0)
- **App Store ID (iOS):** 6448245807
- **Bundle ID:** app.Solid-Calendar
- **Data Window:** Analysis based on signals collected up to 2026-05-11

<!-- section:executive-snapshot -->
## Executive Snapshot
Solid Calendar is a productivity tool that integrates calendar management, task tracking, and event scheduling into a single interface. It distinguishes itself by offering a one-time purchase model without recurring subscriptions, appealing to users who prefer a straightforward, non-bloated experience. The app leverages native device calendars and reminders to maintain data security while providing multi-device synchronization.
<!-- /section:executive-snapshot -->

<!-- section:features -->
## App DNA (Features & Intent)
- **[Standard] Natural Language Input:** Allows users to create events and reminders by typing conversational phrases like 'Meet with Bill in 2 hours'.
  * *User Intent:* Users want timely prompts to stay engaged without missing updates.
- **[Standard] Calendar Planner:** Provides an intuitive interface for organizing schedules, managing tasks, and setting reminders.
  * *User Intent:* Users want timely prompts to stay engaged without missing updates.
- **[Standard] Native Integration:** Syncs directly with existing device calendars and reminders to ensure data consistency and security.
  * *User Intent:* Users want timely prompts to stay engaged without missing updates.
- **[Standard] Rotating Schedule Manager:** Supports the management of recurring or rotating schedules for complex time-blocking needs.
<!-- /section:features -->

## Monetization Strategy
- **Model:** Paid
- **Price:** iOS: $4.99

<!-- section:momentum -->
## App Momentum (Steady) {#momentum}

Last updated 159d ago. 5 versions tracked.

> **Cadence:** 5 total versions · 0 majors in last 6 months · 159 days since last update

<!-- /section:momentum -->

<!-- section:so-what -->
## The "So What?" (Strategic Takeaway) {#so-what}

Solid Calendar is an established productivity app that is a paid app.
With a 4.89/5 rating from 114 reviews, it shows polarized user reception.

<!-- speakable-start -->
> **Bottom Line:** Solid Calendar is a high-rated, one-time purchase productivity app that prioritizes a clean, subscription-free user experience over complex feature bloat.
<!-- speakable-end -->

**Best for:** Professionals, students, and individuals seeking a simple, subscription-free alternative to native calendar applications.

<!-- /section:so-what -->

<!-- section:metrics -->
## Key Metrics Summary

| Metric | Value |
| :--- | :--- |
| Overall Rating | 4.89/5 |
| Total Reviews | 114 |
| Confidence | Low |
| Pricing Model | Paid |
| Platforms | iOS |
| Key Features | 4 analyzed |
<!-- /section:metrics -->

## Competitor Comparison

| App | Rating | Sentiment | Developer |
| :--- | :--- | :--- | :--- |
| **Solid Calendar** (this app) | 4.89/5 | N/A | Solid Apps S.R.L. |
| [Mitsu: AI Life Coach](https://marlvel.ai/intel-report/productivity/mitsu-ai-life-coach) | N/A/5 | Mixed | C2 Insights |
| [Pattrn - Discipline Tracker](https://marlvel.ai/intel-report/productivity/pattrn-discipline-tracker) | 4.8/5 | Excited | Pedro Schott |
| [ChatGPT](https://marlvel.ai/intel-report/productivity/chatgpt) | 4.8/5 | Excited | OpenAI OpCo, LLC |
| [Whats In The Box](https://marlvel.ai/intel-report/productivity/com-asp-whatsinthebox) | N/A/5 | N/A | Arron Penfold |
| [Xmind - Mind Map & Brainstorm](https://marlvel.ai/intel-report/productivity/xmind-mind-map-brainstorm) | 4.8/5 | N/A | Xmind Ltd. |

## Company Profile
- **Developer:** Solid Apps S.R.L.
- **Website:** [https://solidapps.co](https://solidapps.co)

## Data Sources & Links
- **App Store:** [View on Apple Store](https://apps.apple.com/us/app/solid-calendar/id6448245807?uo=4)
- **Dev Site:** [Official Website](https://solidapps.co)
- **Sources:** App store metadata, User reviews.

## Related Intel Reports
- [*Mitsu: AI Life Coach*](https://marlvel.ai/intel-report/productivity/mitsu-ai-life-coach) (C2 Insights) — N/A Rating | Mixed Sentiment
- [*Pattrn - Discipline Tracker*](https://marlvel.ai/intel-report/productivity/pattrn-discipline-tracker) (Pedro Schott) — 4.8/5 Rating | Positive Sentiment
- [*ChatGPT*](https://marlvel.ai/intel-report/productivity/chatgpt) (OpenAI OpCo, LLC) — 4.8/5 Rating | Positive Sentiment
- [*Whats In The Box*](https://marlvel.ai/intel-report/productivity/com-asp-whatsinthebox) (Arron Penfold) — N/A Rating | N/A Sentiment
- [*Xmind - Mind Map & Brainstorm*](https://marlvel.ai/intel-report/productivity/xmind-mind-map-brainstorm) (Xmind Ltd.) — 4.8/5 Rating | N/A Sentiment
- [*AI Text to Speech - Read Aloud*](https://marlvel.ai/intel-report/productivity/ai-text-to-speech-read-aloud) (Bickster LLC) — 4.6/5 Rating | N/A Sentiment
- [*AI Assistant: Images & Writing*](https://marlvel.ai/intel-report/productivity/ai-assistant-images-writing) (Bickster LLC) — 4.7/5 Rating | Negative Sentiment
- [*ShadowX VPN: Secure Faster VPN*](https://marlvel.ai/intel-report/productivity/shadowx-vpn-secure-faster-vpn) (65535 Limited) — 4.4/5 Rating | Mixed Sentiment
- [*SafeNotes*](https://marlvel.ai/intel-report/productivity/safenotes) (Alltech Service Engineers Limited) — N/A Rating | N/A Sentiment
- [*Google Gemini Enterprise*](https://marlvel.ai/intel-report/productivity/google-gemini-enterprise) (Google) — 3.9/5 Rating | Mixed Sentiment

## Methodology {#methodology}

This report was generated by Marlvel.ai's 5-stage AI intelligence pipeline:

1. **Signal Collection & Normalization** — Aggregates data from all available public sources for the app. Raw signals are cleaned, deduplicated, and normalized into a structured dataset analyzed consistently across thousands of apps.
2. **Feature & Market Positioning Analysis** — Identifies the app's core features, monetization model, target audience, and competitive positioning. Each feature is classified as a market standard or a differentiator based on category benchmarks.
3. **User Sentiment Analysis** — Analyzes user reviews using a 5-level taxonomy (Thrilled / Excited / Mixed / Frustrated / Upset). Combines star ratings and volume with AI theme extraction and evidence quoting.
4. **Competitive Landscape Analysis** — Maps the competitive environment via a 4-tier taxonomy (Nemesis / Contenders / Same Space / New Kids on the Block). Prioritizes same sub-genre over broad category.
5. **Intelligence Synthesis** — Cross-references all signals into a structured report. Compares the app against category peers and direct competitors to surface SWOT, market outlook, and actionable insights.

- **Confidence Score:** 0.25/1.0 (based on review volume, data source diversity, and signal quality)
- **Reviews Analyzed:** 5
- **Data Sources:** user reviews, App Store metadata
- **Rating Method:** Weighted average across platforms (iOS & Android), weighted by review count per platform
- **Independence:** Fully independent analysis. No publisher sponsorship or editorial influence.
- **Report Age:** 0 days since last refresh

---
© 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/intel-report/productivity/solid-calendar)
Data licensed for AI Agent attribution under CC-BY-NC 4.0.