# iSTARpal vs SignMaster

The clearest difference is ads: SignMaster at none against iSTARpal's shown. iSTARpal's advantage is update cadence (every 5 months vs every 15 months) and iOS requirement (13.0 vs 16.0). On price, 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.

iSTARpal ships an update every 5 months, SignMaster every 15 months. The most recent releases landed on October 25, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | iSTARpal | SignMaster |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 5 months** | Every 15 months |
| Monetization | — | Free |
| Size | 128 MB | 16 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Muhammad Azhar Abu](https://appshunter.io/developer/1708347208) | [Belaid Ouharrou Alrais](https://appshunter.io/developer/1720813107) |

## What reviewers say

### iSTARpal

[App page](https://appshunter.io/ios/app/istarpal/id6467180031)

**Features:** Apple Wallet

**In-app purchases:** none


### SignMaster

[App page](https://appshunter.io/ios/app/signmaster/id6475358531)

Master signed number operations with this free educational app. It offers guided solutions, diverse challenges, and progress tracking for students of all levels. Learn addition, subtraction, multiplication, and division of signed numbers interactively.

**Highlights:** Addition, subtraction, multiplication, division of signed numbers, Step-by-step guided solutions, Beginner to expert skill levels, Progress tracking, Offline learning capability, User-friendly interface

**In-app purchases:** none


## Frequently asked questions

### Is iSTARpal free?

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

### Is SignMaster free?

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

### Do iSTARpal or SignMaster have ads?

iSTARpal shows ads; SignMaster does not.

### Which is updated more often, iSTARpal or SignMaster?

iSTARpal ships an update every 5 months, and SignMaster every 15 months. Most recently, iSTARpal was updated on October 25, 2026 and SignMaster on October 19, 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.*