# Calvertr Lite vs iBigCalc

The clearest difference is in-app purchases: iBigCalc at none against Calvertr Lite's 3. iBigCalc also leads on update cadence (every 3 weeks vs every 6 months). Calvertr Lite's advantage is ads (none vs shown) and iOS requirement (8.0 vs 17). On price and device support there is nothing between them.

Both are free to download. Calvertr Lite sells 3 one-off in-app purchases. iBigCalc asks for nothing beyond the download.

Calvertr Lite ships an update every 6 months, iBigCalc every 3 weeks. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Calvertr Lite | iBigCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (10 ratings)](https://appshunter.io/ios/app/calvertr-lite/id938033085/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 26 MB | 5 MB |
| Requires iOS | **8.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Intuz, Inc.](https://appshunter.io/developer/1445627232) | [Manh Phi Nguyen](https://appshunter.io/developer/1461707344) |

## What reviewers say

### Calvertr Lite

[App page](https://appshunter.io/ios/app/calvertr-lite/id938033085)

This free utility app offers a powerful unit converter and calculator with a sleek design. It features thousands of conversions across 34 categories, currency conversion, and a versatile calculator with live math expressions. Personalize your experience with custom themes and save/share your work.

**Highlights:** 34 unit conversion categories, 157 world currency support, Live math expression calculator, Customizable background themes, Save and share conversions/calculations, Notification center widget calculator

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| Unlock All Themes | $0.99 | one-time |
| Currency Conversion | $0.99 | one-time |


### iBigCalc

[App page](https://appshunter.io/ios/app/ibigcalc/id6760924865)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calvertr Lite free?

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

### Is iBigCalc free?

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

### Do Calvertr Lite or iBigCalc have ads?

iBigCalc shows ads; Calvertr Lite does not.

### Which is updated more often, Calvertr Lite or iBigCalc?

Calvertr Lite ships an update every 6 months, and iBigCalc every 3 weeks. Most recently, Calvertr Lite was updated on October 14, 2026 and iBigCalc on October 16, 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.*