# NilnocCalc vs RainbowCalc

The clearest difference is rating: NilnocCalc at 5.0 against RainbowCalc's 2.0. NilnocCalc also leads on ads (none vs shown) and monetization model (free vs ad-supported). RainbowCalc's advantage is update cadence (fortnightly vs every 3 months). On price, ratings volume, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

NilnocCalc holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

NilnocCalc ships an update every 3 months, RainbowCalc fortnightly. The most recent releases landed on November 1, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | NilnocCalc | RainbowCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nilnoccalc/id576052957/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/rainbowcalc/id6479331134/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | **Free** | Ad-supported |
| Size | 5 MB | 34 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [John Conlin](https://appshunter.io/developer/576052961) | [Andre Silva](https://appshunter.io/developer/1719182490) |

## What reviewers say

### NilnocCalc

[App page](https://appshunter.io/ios/app/nilnoccalc/id576052957)

A powerful 64-bit calculator with multiple number system displays, trigonometric functions, and customizable button colors. It offers unit conversions, binary float display, and permutation/combination calculations.

**Highlights:** 64-bit calculation engine, Hex, Octal, Binary displays, Full trigonometric functions, Customizable button colors and effects, Unit conversion constants, Binary Float display, Combinations and Permutations

**Features:** macOS Compatibility

**In-app purchases:** none


### RainbowCalc

[App page](https://appshunter.io/ios/app/rainbowcalc/id6479331134)

This calculator app offers extensive customization with a wide color picker for backgrounds and keys, enhancing usability and accessibility. It includes a calculation history with sharing options and supports basic arithmetic, percentages, and square roots.

**Highlights:** Customizable background and key colors, Advanced color picker, Calculation history, Share calculations, Basic operations, Percentage calculations, Square root calculations

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is NilnocCalc free?

NilnocCalc is free to download, with no in-app purchases.

### Is RainbowCalc free?

RainbowCalc is free to download, with no in-app purchases.

### Which has better reviews, NilnocCalc or RainbowCalc?

NilnocCalc is rated higher. NilnocCalc averages 5.0 out of 5 from 1 ratings, while RainbowCalc averages 2.0 from 1 ratings.

### Do NilnocCalc or RainbowCalc have ads?

RainbowCalc shows ads; NilnocCalc does not.

### Which is updated more often, NilnocCalc or RainbowCalc?

NilnocCalc ships an update every 3 months, and RainbowCalc fortnightly. Most recently, NilnocCalc was updated on November 1, 2026 and RainbowCalc on October 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*