# E vs Calculator T

The clearest difference is update cadence: Calculator T at every 2 days against E's every 3 months. Calculator T also leads on iOS requirement (11.0 vs 13.0). On price, ads, 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.

E ships an update every 3 months, Calculator T every 2 days. The most recent releases landed on June 11, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | E | Calculator T |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | — | Free |
| Size | 21 MB | 16 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Ulaanbaatar Railway, Mongolian-Russian JVC](https://appshunter.io/developer/1273656008) | [Xiao Hou Yi Sheng Traditional Chinese Medicine Technology (Shenzhen) Co., Ltd](https://appshunter.io/developer/1524258136) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-normative/id6470155996)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calculator T

[App page](https://appshunter.io/ios/app/calculator-t/id6473983653)

This app offers advanced scientific calculation and unit conversion capabilities. It features a history tape, memory functions, and supports complex mathematical operations. It also includes currency exchange rates and a wide range of measurement conversions.

**Highlights:** Standard and scientific function modes, Extensive unit conversion (over 300 units), History tape for last 100 records, Memory buttons (MS, M+, M-, MR, MC), Copy/paste functionality for equations and results, Support for large number calculations and scientific notation, Currency exchange rate conversion

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is E free?

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

### Is Calculator T free?

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

### Do E or Calculator T have ads?

Neither E nor Calculator T shows ads.

### Which is updated more often, E or Calculator T?

E ships an update every 3 months, and Calculator T every 2 days. Most recently, E was updated on June 11, 2026 and Calculator T on June 1, 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.*