CarLog vs Heliochron
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CarLog
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CarLog ist dein digitales Fahrtenbuch und Kostentracker fürs Auto – einfach, schnell und komplett privat. Alle Daten bleiben auf deinem Gerät. CarLog ist kostenlos nutzbar: Tankbuch, Kosten und ein Fahrzeug ganz ohne Kauf. Fahrtenbuch, detaillierte Statistik und weitere Fahrzeuge schaltest du mit der Vollversion frei (6,99 €, einmalig, kein Abo). TANKEN & VERBRAUCH (kostenlos) • Tankungen in Sekunden erfassen – Kilometerstand sofort eingabebereit • Automatische Verbrauchsberechnung (L/100 km bzw. kWh/100 km) • Spritpreis-Verlauf, günstigste & teuerste Tankstelle • Tankbelege per Foto speichern und automatisch auslesen KOSTEN IM GRIFF (kostenlos) • Einmalige und wiederkehrende Ausgaben (monatlich, vierteljährlich, halbjährlich, jährlich) • Versicherung, Kfz-Steuer, Leasing, Wartung, Reifen, Tuning u. v. m. • Kosten pro Monat, pro Jahr, pro Kilometer und pro Tag FAHRTENBUCH (Vollversion) • Automatische Fahrterkennung, ideal fürs Finanzamt • Abfahrt- und Ankunftszeit, Strecke, Zweck • Änderungshistorie für steuerliche Nachweise PROGNOSE & STATISTIK (Vollversion) • Jahresschätzung für Distanz, Kraftstoff und Ausgaben • Anstehende Termine wie TÜV werden eingerechnet • Übersichtliche Diagramme und Kostenvergleiche ERINNERUNGEN (kostenlos) • TÜV/HU, Inspektion, Ölwechsel & Co. – nach Datum oder Kilometerstand • Nie wieder einen Termin verpassen FÜR JEDES FAHRZEUG • Benzin, Diesel, Hybrid, LPG und Elektro • Bei E-Autos: „Geladen", kWh und Ladekosten statt Kraftstoff • 1 Fahrzeug kostenlos, weitere mit der Vollversion – jeweils mit eigenem Foto DEINE DATEN BLEIBEN BEI DIR • Kein Konto, keine Werbung, kein Tracking • Alles lokal auf deinem iPhone gespeichert Lade CarLog, starte kostenlos und weißt endlich genau, was dein Auto kostet. CarLog is your digital trip log and cost tracker for your car – simple, fast, and completely private. All data stays on your device. CarLog is free to use: fuel log, expenses, and one vehicle, no purchase required. Trip log, detailed statistics, and additional vehicles unlock with the full version (one-time purchase, no subscription). FUEL & CONSUMPTION (free) • Log fill-ups in seconds – mileage ready to enter instantly • Automatic consumption calculation (L/100km or kWh/100km) • Fuel price history, cheapest & most expensive station • Save fuel receipts by photo with automatic reading EXPENSES UNDER CONTROL (free) • One-time and recurring expenses (monthly, quarterly, semi-annually, yearly) • Insurance, vehicle tax, leasing, maintenance, tires, tuning & more • Costs per month, per year, per kilometer, and per day TRIP LOG (full version) • Automatic trip detection, ideal for tax records • Departure and arrival time, distance, purpose • Change history for tax documentation FORECAST & STATISTICS (full version) • Annual estimate for distance, fuel, and expenses • Upcoming dates like inspections are factored in • Clear charts and cost comparisons REMINDERS (free) • Inspections, service, oil changes & more – by date or mileage • Never miss a deadline again FOR EVERY VEHICLE • Gasoline, diesel, hybrid, LPG, and electric • For EVs: "charged," kWh, and charging costs instead of fuel • 1 vehicle free, additional vehicles with the full version – each with its own photo YOUR DATA STAYS WITH YOU • No account, no ads, no tracking • Everything stored locally on your iPhone Download CarLog, start for free, and finally know exactly what your car costs.
Heliochron
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Follow the sun. Look at a familiar place differently. Heliochron is a pocket instrument for light, time, and place. Use the AR view to see the calculated sun path over your surroundings, then explore the day and year with two slim, tactile thumbwheels. Notice a courtyard on an architectural walk. Explore a roofline in another season. Look from a possible planter position, or find a reason to return to a favorite view. THE PLACE COMES FIRST On first launch, a short explanation shows why location and camera access are useful. Sun calculations happen on your iPhone, without uploading your location. Allow access to start exploring, or enter coordinates manually in Settings. Narrow azimuth and elevation rulers leave room for the world outside. TIME AT YOUR FINGERTIPS Use Sun to change the time of day and date with separate black-metal wheels. Compare seasonal paths or return to Now with a tap. With obstacle editing off, drag the sun or its path to explore another time; the wheels follow your movement. COMPARE THE YEAR Turn on Year paths in Sun to compare seven representative trajectories, pairing months with similar sun paths. Month labels start in a column on the right and can be dragged along their paths. The overlay starts off and remembers your choice. The paths approximate the 21st of the first named month. MARK WHAT STANDS IN THE WAY Optionally paint trees, buildings, or hills with your finger. Fine diagonal hatching shows your marks, and the sun path dims behind them. Open Obstacles to paint, erase, undo, adjust the brush, or save and restore a named place. KEEP THE VIEW Tap the camera button to save the current sun view, including the camera scene, path, and obstacle marks, to Photos. Photos access is requested only when saving. Saved places and drawings stay locally on your iPhone. No account is required. STAY CURIOUS. KNOW THE LIMITS. Heliochron shows calculated sun positions, not weather or shadows moving across buildings. Obstacle painting is manual, not automatic detection. Marks describe one viewpoint and need checking when you move or return. Alignment depends on location, compass heading, camera tracking, and conditions. Settings includes compass correction and tracking recovery. Avoid pointing the camera directly at the sun for prolonged periods: this may damage the camera. The in-app warning and camera pause are reminders, not physical protection. Pausing capture cannot block sunlight; turn the lens away. For architects and urban planners exploring off duty, garden and balcony growers, and anyone who enjoys looking closer. Not a certified survey, building-compliance, PV-design, or professional solar-assessment tool.
Screenshots
Verdict
The clearest difference is price: CarLog at Free against Heliochron's $0.99. Heliochron's advantage is in-app purchases (none vs 1) and iOS requirement (17.0 vs 26.2). On update cadence, ads and device support 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
CarLog is free to download; Heliochron costs $0.99 up front. CarLog sells 1 one-off in-app purchase. Heliochron asks for nothing beyond the download.
CarLog ships an update every 5 days, Heliochron weekly. Both last shipped on October 31, 2026.
| Parameter | CarLog | Heliochron |
|---|---|---|
| Price | Free — better | $0.99 |
| Update frequency | Every 5 days — better | Weekly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.2 | 17.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Riccardo Piro | ViSSee AG |
In-app purchases
CarLog
- CarLog Vollversion$5.99
Heliochron
No in-app purchases









