TallyRig: Well Control Calc
By 婷婷 乔
TallyRig is a field-ready utility calculator for drilling and well control workflows on iOS.
The App DNA
What makes this app unique?
It provides drilling professionals with rapid, offline-accessible calculation tools to replace error-prone manual paper records in remote rig environments.
For Drilling engineers, toolpushers, drillers, mud engineers, and well control trainees requiring field-ready reference tools.
Key features
High-contrast screen setting for outdoor visibility on the rig
Full functionality without cellular or satellite signal
Four specialized tools for Kill Sheet, Stuck Pipe, BOP Check, and Cementing
How much does it cost?
The app is currently distributed as a free utility with no visible IAP or subscription gates.
Velocity
Maintenance developmentopaqueShow more...
The app launched on March 9, 2026, and has not received any updates in the 85 days since. With only a single release recorded, the development cadence is currently stagnant. There is no evidence of ongoing feature development, bug fixes, or live operations. The project is currently in a maintenance state due to the lack of activity following the initial release.
Who built it?
婷婷 乔
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esimSubscriptionUser Sentiment
What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for TallyRig: Well Control Calc
How's the Utilities market?
TallyRig operates as a niche utility tool for the drilling sector, currently lacking the rating volume or chart presence of established industrial calculators.
Read the market outlookThe rivals identified
Unlock the deeper market read.
Access the full report for freeThe Analyst's Read
Key takeaways for TallyRig: Well Control Calc
Where is it heading?
The industrial utility market is consolidating around tools that offer both calculation depth and regulatory compliance. TallyRig remains exposed until it bridges the trust gap through certification, so the PM must pivot toward professional-grade validation to survive against enterprise-backed incumbents.
- The app launched recently without a clear monetization path, which limits its ability to fund the regulatory certifications required for industrial adoption.
- The absence of user ratings or reviews prevents the formation of a trust baseline, which is critical for tools used in high-stakes drilling operations.
The SWOT
- Sunlight-readable UI enables field-ready operation in high-glare environments
- Offline-first architecture ensures reliability in remote drilling sites
- Integration of automated reporting for regulatory compliance
- Expansion into fleet-wide maintenance tracking for industrial supervisors
Next best moves
Audit API Std. 53 compliance requirements because current lack of certification limits professional adoption → increase trust among drilling engineers
+ 1 more prioritized moveThe counter-intuitive read
The lack of monetization is a strategic error: in high-stakes industrial environments…
Read the full takeFeature gaps
AFM-compliant performance forecasting (available in EFB-Pro) +2
Since the last report: The report reflects a strategic pivot toward industrial compliance and professional-grade validation, moving away from a purely manual-entry focus.
Bottom line
TallyRig solves the immediate pain of mobile-unfriendly field calculations, but its lack of regulatory certification and monetization strategy leaves it vulnerable to enterprise-backed rivals, so the PM should prioritize safety-standard compliance to secure professional adoption.
Unlock 2 critical frictions, 2 market threats, 1 more prioritized move and the analyst’s take.
Access the full report for freeReport last updated