# Jumpstash vs sci.calculator

The clearest difference is in-app purchases: Jumpstash at none against sci.calculator's 1. Jumpstash also leads on update cadence (every 2 weeks vs every 5 weeks) and device support (5 vs 3). On price, ads and iOS requirement there is nothing between them.

Both are free to download. sci.calculator sells 1 one-off in-app purchase. Jumpstash asks for nothing beyond the download.

Jumpstash ships an update every 2 weeks, sci.calculator every 5 weeks. The most recent releases landed on September 14, 2026 and December 22, 2025 respectively.

## The numbers

| Metric | Jumpstash | sci.calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/jumpstash/id1465670860/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 weeks |
| Monetization | Free | — |
| Size | 17 MB | 49 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Mackintosh II](https://appshunter.io/developer/1281426136) | [Yukihiro Shioya](https://appshunter.io/developer/1565306192) |

## What reviewers say

### Jumpstash

[App page](https://appshunter.io/ios/app/jumpstash/id1465670860)

Securely store backup codes for your accounts in iCloud Keychain. Access them from any device logged into iCloud, ensuring you never lose access to your important services.

**Highlights:** Secure backup code storage, iCloud Keychain integration, Cross-device access, Account lockout prevention, Token generation backup

**In-app purchases:** none


### sci.calculator

[App page](https://appshunter.io/ios/app/scicalculator/id1620728508)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Jumpstash free?

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

### Is sci.calculator free?

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

### Do Jumpstash or sci.calculator have ads?

Neither Jumpstash nor sci.calculator shows ads.

### Which is updated more often, Jumpstash or sci.calculator?

Jumpstash ships an update every 2 weeks, and sci.calculator every 5 weeks. Most recently, Jumpstash was updated on September 14, 2026 and sci.calculator on December 22, 2025.

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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.*