# Document Sign vs Scientific calculator Lite

The clearest difference is ads: Scientific calculator Lite at none against Document Sign's shown. Scientific calculator Lite also leads on update cadence (fortnightly vs every 2 months) and iOS requirement (13.0 vs 15.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Document Sign sells 5 in-app purchases, starting at $4.99 per month and Scientific calculator Lite sells 1 in-app purchase, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Document Sign ships an update every 2 months, Scientific calculator Lite fortnightly. Both last shipped on November 3, 2026.

## The numbers

| Metric | Document Sign | Scientific calculator Lite |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 76 MB | 24 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [SWAINFO SOLUTIONS](https://appshunter.io/developer/1650786446) | [Smit Pipaliya](https://appshunter.io/developer/1646406919) |

## What reviewers say

### Document Sign

[App page](https://appshunter.io/ios/app/document-sign/id6443938638)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $4.99 | per month |
| Weekly Premium Access | $6.99 | per 7 days |
| Monthly Premium Access | $9.99 | per month |
| Yearly Premium Access | $39.99 | per year |
| Lifetime Subscription | $9.99 | one-time |


### Scientific calculator Lite

[App page](https://appshunter.io/ios/app/scientific-calculator-lite/id6463851192)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Calculator - Monthly | $9.99 | per month |


## Frequently asked questions

### Is Document Sign free?

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

### Is Scientific calculator Lite free?

Scientific calculator Lite is free to download, with in-app purchases available.

### Do Document Sign or Scientific calculator Lite have ads?

Document Sign shows ads; Scientific calculator Lite does not.

### Which is updated more often, Document Sign or Scientific calculator Lite?

Document Sign ships an update every 2 months, and Scientific calculator Lite fortnightly. Most recently, Document Sign was updated on November 3, 2026 and Scientific calculator Lite on November 3, 2026.

---

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