Surf USA Mobile vs Baseline OBD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Surf USA Mobile
Easily top up your mobile balance with just a few taps. Monitor your data, minutes, and message consumption to stay informed about your usage and avoid unexpected charges.
- Fast balance recharges
- Instant top-ups
- Detailed consumption view
- Monitor data usage
- Track minutes and messages
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Simple and Fast Recharges: Recharging your balance has never been easier. With just a few taps, users can perform instant balance top-ups directly through the app, ensuring they never run out of credit when they need it most. Consumption View: Always stay informed about your data consumption, minutes and messages. The Surf USA Mobile app offers a detailed view of current usage, allowing users to closely monitor their communication habits and adjust plans as needed to avoid bill surprises.
Baseline OBD
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Baseline reads your car through a Bluetooth OBD-II adapter, keeps a record of every drive, and watches the margins on the car's own on-board tests, so a part that is wearing shows long before its warning light. Every drive, kept. Plug in the adapter once. From then on Baseline connects on its own when the car wakes up, takes a snapshot (identification, codes, freeze frame, on-board monitor results) and records the drive, even with the phone in your pocket. Margins, not just codes. A code is the cliff. Baseline shows the distance to it: the catalyst's own efficiency test, the oxygen sensor, fuel trim, warm-up rate, the 12 V battery at rest, and the engine's misfire counters per cylinder, polled every 30 seconds and timed against engine starts. Evidence you can hand over. A pending code and its freeze frame vanish at the end of the next clean drive. Baseline keeps them and exports an evidence packet: a PDF, CSV files and the raw records, with the readings exactly as the car reported them. Trend and crossing estimates, in beta. Once a test has enough drives, Baseline fits a line to your own car's readings and estimates when it would reach the limit. These estimates are labelled beta wherever they appear. Private by design. No account, no server, no tracking. Everything stays on your iPhone unless you export it. Works with - Cars sold in the United States from model year 2008 on (CAN OBD-II), and many 2004–2007 cars. - The OBDLink CX Bluetooth LE adapter. ELM327-based Bluetooth LE adapters (Vgate iCar Pro BLE, Veepeak OBDCheck BLE, vLinker BLE) should connect but are untested; Wi-Fi and classic Bluetooth adapters cannot be used by an iPhone app. Baseline reads only. It never writes to the car and never clears a code. It is not a substitute for a professional diagnosis: when your car's own warning light is on, have it looked at.
Screenshots
Verdict
The clearest difference is device support: Surf USA Mobile at 3 against Baseline OBD's 1. Surf USA Mobile also leads on iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.
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.
| Parameter | Surf USA Mobile | Baseline OBD |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (13 ratings) — better | — |
| Positive reviews | 81.8% of reviews | — |
| Number of ratings | 13 — better | — |
| Update frequency | Fortnightly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 61 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Surf Pay | Alphonse Romero |
In-app purchases
Surf USA Mobile
No in-app purchases
Baseline OBD
No in-app purchases









