interCalculator vs Thumb calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
interCalculator
This utility app offers real-time calculations with optional haptic feedback and a dark mode. It supports unit conversions, number base conversions, and finding divisors for integers.
- Real-time results
- Haptic feedback
- Number base conversion
- Divisor finder
- Dark Mode
- Customizable color scheme
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Real-time result. Optional haptic feedback. Roll a die. Switch between Degrees and Radians. Convert a number between dec, bin, oct and hex. Find all divisors of any less-than-9-digit integer. Improved Function Mode. Dark Mode support. Copy and paste. Customizable color scheme.
Thumb calculator
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A calculator that is easy to operate with just the thumb of one hand, even on large-screen smartphones. *Specially placed numeric keypad
Screenshots
Verdict
The clearest difference is ads: interCalculator at none against Thumb calculator's shown. Thumb calculator's advantage is update cadence (every 2 weeks vs every 18 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
interCalculator ships an update every 18 months, Thumb calculator every 2 weeks. The most recent releases landed on June 5, 2026 and September 17, 2026 respectively.
| Parameter | interCalculator | Thumb calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 18 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 15.6 — better | 15.8.3 |
| Further details — not scored | ||
| Size | 54 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | interfinity Limited | Hideaki Uchikoshi |
In-app purchases
interCalculator
No in-app purchases
Thumb calculator
No in-app purchases
Questions
Is interCalculator free?
Is Thumb calculator free?
Do interCalculator or Thumb calculator have ads?
Which is updated more often, interCalculator or Thumb calculator?
Other comparisons
