B.B. Link Configurator vs Function Fitter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
B.B. Link Configurator
Configure a Bluetooth adapter to connect your amateur radio to an iOS device. This enables data exchange with apps like RadioMail and aprs.fi using the radio's TNC as a packet modem.
- Configure B.B. Link Bluetooth adapter
- Pair with Kenwood TH-D74/TH-D75 radios
- Connect radio (Bluetooth Classic) to iOS (BLE)
- Utilize radio's TNC as packet modem
- Data exchange with amateur radio apps
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This app configures the B.B. Link Bluetooth adapter for pairing with a Kenwood TH-D74 or TH-D75 radio. The adapter facilitates a connection between the radio, which uses Bluetooth Classic, and an iOS device via BLE. This connection allows apps like RadioMail, Packet Commander and aprs.fi to utilize the radio's built-in TNC as a packet modem for data exchange over amateur radio.
Function Fitter
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Function curve fitting using custom function that you enter. Reads data values either from file or manual entry, and tries to fit your function to the data by adjusting 1 to 4 parameters for a least-squares best fit. For enjoyment only, NOT for serious data needs. This is minimalist by design with no ads, no in-app purchases, no bells and whistles, and no fancy moving graphics to distract you, just fun. Note: Entertainment value only, fun using different parameter starting values.
Screenshots
Verdict
B.B. Link Configurator and Function Fitter are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
B.B. Link Configurator ships an update every 5 weeks, Function Fitter monthly. The most recent releases landed on October 10, 2026 and October 11, 2026 respectively.
| Parameter | B.B. Link Configurator | Function Fitter |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (8 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 5 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Island Magic Co. | 29Apps LLC |
In-app purchases
B.B. Link Configurator
No in-app purchases
Function Fitter
No in-app purchases
Questions
Is B.B. Link Configurator free?
Is Function Fitter free?
Do B.B. Link Configurator or Function Fitter have ads?
Which is updated more often, B.B. Link Configurator or Function Fitter?
Other comparisons
