# AirChord vs Graph Calc Plus

The clearest difference is price: AirChord at Free against Graph Calc Plus's $2.99. AirChord also leads on update cadence (every 5 months vs every 39 months). Graph Calc Plus's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.

AirChord is free to download; Graph Calc Plus costs $2.99 up front. AirChord sells 2 one-off in-app purchases. Graph Calc Plus asks for nothing beyond the download.

AirChord ships an update every 5 months, Graph Calc Plus every 39 months. The most recent releases landed on September 19, 2026 and December 13, 2025 respectively.

## The numbers

| Metric | AirChord | Graph Calc Plus |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.6 (99 ratings)](https://appshunter.io/ios/app/airchord/id1343901847/reviews)** | — |
| Number of ratings | **99** | — |
| Positive reviews | 81.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 39 months |
| Monetization | Free with in-app purchases | — |
| Size | 65 MB | 1 MB |
| Requires iOS | 15.5 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kevin Kelly](https://appshunter.io/developer/810609199) | [Heng Jia Liang](https://appshunter.io/developer/1532000635) |

## What reviewers say

### AirChord

[App page](https://appshunter.io/ios/app/airchord/id1343901847)

Stream audio wirelessly to AirPlay and Bluetooth speakers. This app also introduces internet streaming, allowing you to save and replay audio sessions on demand, creating a personal audio station.

**Highlights:** Wireless audio streaming, AirPlay and Bluetooth speaker support, Internet streaming, Save and replay audio sessions, Personal audio station

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| $0.99 tip | $0.99 | one-time |
| $9.99 tip | $9.99 | one-time |

**What reviewers like**

- 🎶 Streams vinyl to HomePods
- 💡 Innovative use of old iPhones
- 👍 Easy to set up
- 💰 Saves money on extra speakers
- 🚀 Flawless Airplay casting

**What reviewers complain about**

- 🐛 Sound drops since last update
- 🐛 App crashes frequently
- 🐛 Connection issues sometimes
- 🐛 Doesn't work with Sonos USB-C adapter
- 🐛 No input selection

**Reported bugs**

- Sound drops since last update
- App crashes frequently
- Audio connection sometimes fails
- Does not work with Sonos USB-C adapter
- No input selection available

**Requested features**

- Expand album art to full screen
- Album art visualiser
- Improve Siri integration for output selection
- Support for multi-speaker Airplay 2
- Add Airplay 2 support for stereo pairs


### Graph Calc Plus

[App page](https://appshunter.io/ios/app/graph-calc-plus/id1612916130)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AirChord free?

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

### Is Graph Calc Plus free?

Graph Calc Plus costs $2.99, with no in-app purchases.

### Do AirChord or Graph Calc Plus have ads?

Neither AirChord nor Graph Calc Plus shows ads.

### Which is updated more often, AirChord or Graph Calc Plus?

AirChord ships an update every 5 months, and Graph Calc Plus every 39 months. Most recently, AirChord was updated on September 19, 2026 and Graph Calc Plus on December 13, 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.*