# LienClock vs Greatest Common Divisor Solver

The clearest difference is update cadence: LienClock at weekly against Greatest Common Divisor Solver's every 2 months. Greatest Common Divisor Solver's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.2). On price, ads and in-app purchases there is nothing between them.

Both are free to download. LienClock sells 2 in-app purchases, starting at $9.99 per year and Greatest Common Divisor Solver sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

LienClock ships an update weekly, Greatest Common Divisor Solver every 2 months. The most recent releases landed on November 10, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | LienClock | Greatest Common Divisor Solver |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Size | 6 MB | 179 MB |
| Requires iOS | 17.2 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [慧慧 高](https://appshunter.io/developer/1887721875) | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) |

## What reviewers say

### LienClock

[App page](https://appshunter.io/ios/app/lienclock/id6774528121)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Annual | $9.99 | per year |
| Pro Lifetime | $19.99 | one-time |


### Greatest Common Divisor Solver

[App page](https://appshunter.io/ios/app/greatest-common-divisor-solver/id6802801196)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| +30 User Tokens | $0.29 | one-time |
| +1 Convenience Token / 6h, max. +2 | $0.59 | one-time |
| +150 User Tokens | $0.99 | one-time |
| +2 Convenience Tokens / 6h, max. +4 | $0.99 | one-time |
| +300 User Tokens | $1.49 | one-time |
| +4 Convenience Tokens / 6h, max. +8 | $1.59 | one-time |
| Lifetime Access | $1.99 | one-time |


## Frequently asked questions

### Is LienClock free?

LienClock is free to download, with in-app purchases available.

### Is Greatest Common Divisor Solver free?

Greatest Common Divisor Solver is free to download, with in-app purchases available.

### Do LienClock or Greatest Common Divisor Solver have ads?

Neither LienClock nor Greatest Common Divisor Solver shows ads.

### Which is updated more often, LienClock or Greatest Common Divisor Solver?

LienClock ships an update weekly, and Greatest Common Divisor Solver every 2 months. Most recently, LienClock was updated on November 10, 2026 and Greatest Common Divisor Solver on November 2, 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.*