# Overdrive Now vs Big Button Calculator Pro Lite

The clearest difference is rating: Big Button Calculator Pro Lite at 4.7 against Overdrive Now's 2.8. Big Button Calculator Pro Lite also leads on ratings volume (14K vs 4). Overdrive Now's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence, 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.

Big Button Calculator Pro Lite holds the better App Store score, 4.7 against 2.8. That said, the two scores are not equally well evidenced: Big Button Calculator Pro Lite has 14K ratings behind it against 4, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 7, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Overdrive Now | Big Button Calculator Pro Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (4 ratings)](https://appshunter.io/ios/app/overdrive-now/id899079297/reviews) | **[4.7 (14K ratings)](https://appshunter.io/ios/app/big-button-calculator-pro-lite/id1131056808/reviews)** |
| Number of ratings | 4 | **14K** |
| Positive reviews | — | 82.7% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | **Free** | Ad-supported |
| Size | 6 MB | 45 MB |
| Requires iOS | **10.3** | 15.2 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Covexis Pte Ltd](https://appshunter.io/developer/417411168) | [Cider Software LLC](https://appshunter.io/developer/465180756) |

## What reviewers say

### Overdrive Now

[App page](https://appshunter.io/ios/app/overdrive-now/id899079297)

Connect to your vehicle remotely using this integrated cloud solution. Monitor and control your car's functions directly from your smart device.

**Highlights:** Integrated cloud solution, Connect to vehicle, Remote control from smart device, Monitor vehicle functions

**Features:** macOS Compatibility

**In-app purchases:** none


### Big Button Calculator Pro Lite

[App page](https://appshunter.io/ios/app/big-button-calculator-pro-lite/id1131056808)

A user-friendly calculator app featuring large buttons and customizable colorful backgrounds. It offers a dual-line display, multi-line input for complex equations, and convenient gesture controls for editing and copying.

**Highlights:** Large buttons, Dual-line display, 18 color themes, Multi-line input, Gesture controls, VoiceOver accessibility

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 💡 Customizable backgrounds
- 🚀 Accurate calculations
- 👍 Large, clear numbers
- 👍 Helpful for homeschooling

**What reviewers complain about**

- 🐛 Ads can be intrusive
- 🐛 Ads in foreign languages
- 🐛 Ads take time to close
- 🔋 High battery consumption due to ads

**Reported bugs**

- Occasionally shows answer before calculation is complete
- Rounding issues leading to inaccurate results

**Requested features**

- Add more background options
- Allow custom background uploads
- Add option to change button colors
- Improve ad experience or offer ad-free version


## Frequently asked questions

### Is Overdrive Now free?

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

### Is Big Button Calculator Pro Lite free?

Big Button Calculator Pro Lite is free to download, with no in-app purchases.

### Which has better reviews, Overdrive Now or Big Button Calculator Pro Lite?

Big Button Calculator Pro Lite is rated higher. Overdrive Now averages 2.8 out of 5 from 4 ratings, while Big Button Calculator Pro Lite averages 4.7 from 14K ratings.

### Do Overdrive Now or Big Button Calculator Pro Lite have ads?

Big Button Calculator Pro Lite shows ads; Overdrive Now does not.

### Which is updated more often, Overdrive Now or Big Button Calculator Pro Lite?

Overdrive Now ships an update every 3 months, and Big Button Calculator Pro Lite every 3 months. Most recently, Overdrive Now was updated on October 7, 2026 and Big Button Calculator Pro Lite on October 19, 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.*