# Bamboo Calculator vs SignalClock

The clearest difference is price: SignalClock at $0.99 against Bamboo Calculator's $4.99. SignalClock also leads on iOS requirement (12.0 vs 15.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Bamboo Calculator costs $4.99 and SignalClock $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Bamboo Calculator ships an update every 3 months, SignalClock every 5 months. The most recent releases landed on October 20, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Bamboo Calculator | SignalClock |
| --- | --- | --- |
| Price | $4.99 | **$0.99** |
| Rating | **[4.6 (116 ratings)](https://appshunter.io/ios/app/bamboo-calculator/id654137626/reviews)** | — |
| Number of ratings | **116** | — |
| Positive reviews | 77.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Monetization | Free | — |
| Size | 9 MB | 103 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [煦 张](https://appshunter.io/developer/494537607) | [Masafumi Endoh](https://appshunter.io/developer/757354996) |

## What reviewers say

### Bamboo Calculator

[App page](https://appshunter.io/ios/app/bamboo-calculator/id654137626)

This app provides a digital calculator that records every step of your calculations, allowing you to easily review, modify, and recalculate previous entries. It offers basic arithmetic functions with added features like commenting and history editing for enhanced accuracy and convenience.

**Highlights:** Records every calculation step, Edit and recalculate any step, Add comments to calculations, View and edit recent history, Email and print calculation lists, Customizable layout and color

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 👍 Tape records each addition
- 👍 Can add comments/notes
- 👍 Can send calculations via email
- 👍 History is saved

**What reviewers complain about**

- 🐛 Running history not shown
- 🐛 Bluetooth keypad not accepted
- 🐛 Comment function not working
- 🐛 Lacks memory functions (M+, M-, MR, MC)
- 🐛 No copy/paste feature

**Reported bugs**

- Running history not shown alongside calculations page
- Bluetooth keypad numbers not accepted as input
- Comment function not working
- Background doesn't change
- Keyboard clicks cannot be stopped

**Requested features**

- Personalize the calculator
- Add memory functions (M+, M-, MR, MC)
- Add copy/paste feature
- Add a converter (distance, speed, mass etc.)
- Improve skins/themes


### SignalClock

[App page](https://appshunter.io/ios/app/signalclock/id757354993)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Bamboo Calculator free?

Bamboo Calculator costs $4.99, with no in-app purchases.

### Is SignalClock free?

SignalClock costs $0.99, with no in-app purchases.

### Do Bamboo Calculator or SignalClock have ads?

Neither Bamboo Calculator nor SignalClock shows ads.

### Which is updated more often, Bamboo Calculator or SignalClock?

Bamboo Calculator ships an update every 3 months, and SignalClock every 5 months. Most recently, Bamboo Calculator was updated on October 20, 2026 and SignalClock on October 26, 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.*