PrimeCalc vs interCalculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PrimeCalc
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--- PrimeCalc feature --- ■ Normal arithmetic operation (×, /, +, -) is available. ■ prime: integer calculation (Division remainder ÷, prime factorization p) can be done. (You can also exponentiate.) ■ auto: Automatic calculation, memory storage, history recording is possible. ■ global: Digit display of countries around the world is possible. （千、万、億、兆、京、垓、・・・） ■ iPhone / iPad is available. Free. We are displaying advertisements. Caution) In case of large number, calculation error etc. may occur. Please use it together with other calculator. If you have comments, questions, etc., please email or bulletin board. http: //www.eonet.ne.jp/~treechart/
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.
Screenshots
Verdict
The clearest difference is ads: interCalculator at none against PrimeCalc's shown. PrimeCalc's advantage is update cadence (every 5 weeks vs every 18 months) and iOS requirement (12.0 vs 15.6). On price, in-app purchases and device support 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.
PrimeCalc ships an update every 5 weeks, interCalculator every 18 months. The most recent releases landed on September 10, 2026 and June 5, 2026 respectively.
| Parameter | PrimeCalc | interCalculator |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 5 weeks — better | Every 18 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 12 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | Yutaka Nakao | interfinity Limited |
In-app purchases
PrimeCalc
No in-app purchases
interCalculator
No in-app purchases
