Comparison

oncharge vs Voltara

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

oncharge

Features
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Oncharge provides electric vehicle users with a safe and environmentally friendly journey experience with its fast charging stations implemented on urban and intercity roads for a sustainable world. Oncharge electrical vehicle chargers, designed to be friendly to your car;s engine and in accordance with its technology, offer fast charging for your car on a wide range from 22 kW to 200 kW. It remains for you to enjoy the trip as well. Oncharge chargers, which prioritize the safety of you and your vehicle, have many safety and compatibility certificates in their field. oncharge is a Kalyon EV brand.

About

Voltara

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Voltara is a charging-station map and trip planner for electric-vehicle drivers. It merges more than 300,000 chargers from Open Charge Map, OpenStreetMap and national registries into one map, removes duplicates and shows how many sources confirm each station. Ionity, Tesla, Fastned, EnBW, Electra, Electrify America, EVgo, ChargePoint and hundreds of other networks across Europe, North America and Turkiye. LIVE AVAILABILITY - Real-time connector status from national open data in the Netherlands, France, Germany, Switzerland and Finland: how many are free, updated minutes ago - Pro: green and red rings on the map, a "free now" filter and an alert when a saved charger frees up - More countries as they open their data BUILT AROUND YOUR CAR - Pick your EV once (Tesla, Hyundai, Kia, VW, BYD, Renault, MG, Ford, Rivian and 50+ models): incompatible connectors fade out, compatible chargers stand out - Charging-time estimate per station (minutes from 20% to 80%) - Range ring on the map: see where you can reach with your current charge PRICE AND COST - Operator tariffs built in: price per kWh and "what will this charge cost" per station - Sort by cheapest, fastest, nearest or most reliable - Home charging planner: finds the cheapest window in a time-of-use tariff and reminds you to plug in TRIP PLANNER - Charging stops along your route: where to stop, how long to charge, what it costs - Realistic consumption model from live temperature, elevation and route speed - Via points and alternative-route comparison - One-tap handoff to Apple Maps, Google Maps, Waze or Yandex Maps RELIABILITY - A 0-100 reliability score for every charger: source agreement, operator status, last verification and your check-ins - Check-ins: working, all in use, out of order, blocked - Private notes and problem reports (optionally as an OpenStreetMap note) FILTERS - Connector type (Type 2, CCS, CHAdeMO, Tesla/NACS, GB/T), minimum power, DC only, free, operational - Open 24/7, covered parking, wheelchair access, lighting, trailer friendly - Charging-card wallet: show only chargers you can pay at with the cards and apps you own - Smart search: type "Berlin 150 kW free" and the filters apply themselves CHARGING LOG - Session timer: start a charge, get notified at the estimated finish, the log entry is written for you - Energy, cost, average price per kWh and CO2 avoided versus petrol - Achievements for sessions, energy, night charging and networks used EVERYWHERE - Nearby amenities: cafes, restaurants, toilets, shops, hotels - Saved chargers and recent results available offline - Back up everything to one file and move it to a new phone - Light and dark themes; 17 languages VOLTARA PRO Live availability on the map and in filters, ad-free, unlimited trip plans, alternative-route comparison, offline map areas, satellite layer, charging charts, multiple vehicles and CSV export. Monthly, yearly (7-day free trial) or lifetime. The free version shows only occasional full-screen ads and optional rewarded videos, never banners. PRIVACY No account, no servers, no personal data collected. Your location is used only on your device; map and charger data come straight from open-data providers. Your records stay on your phone. Data sources: Open Charge Map (CC BY-SA), OpenStreetMap contributors (ODbL), U.S. DOE Alternative Fuels Data Center, NDW DOT-NL, transport.data.gouv.fr (Licence Ouverte), MobiData BW (DL-DE-BY-2.0), BFE ich-tanke-strom.ch, Fintraffic Digitraffic (CC BY 4.0), NOBIL/Enova (CC BY), OpenFreeMap, Photon by komoot, OSRM, MET Norway, Open-Elevation. Prices and status come from these sources and may change; verify before you rely on them. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel in your Apple ID subscription settings. Terms: https://cansapaz.github.io/Voltara-Privacy/terms.html Privacy: https://cansapaz.github.io/Voltara-Privacy/privacy-policy.html

Screenshots

oncharge4 screens
Voltara4 screens

Verdict

The call

The clearest difference is in-app purchases: oncharge at none against Voltara's 4. oncharge also leads on ads (none vs shown) and update cadence (weekly vs every 5 weeks). On price, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Voltara sells 4 in-app purchases, starting at $3.99 per month. oncharge asks for nothing beyond the download.

UpkeepUpdate frequency

oncharge ships an update weekly, Voltara every 5 weeks. The most recent releases landed on November 7, 2026 and November 10, 2026 respectively.

Scorecard3 real differences · 3 level
oncharge versus Voltara: the parameters behind the verdict, then further details
ParameteronchargeVoltara
PriceFreeFree
Update frequencyWeekly — betterEvery 5 weeks
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size115 MB13 MB
Age rating4+4+
DeveloperKalyon Electrical Vehicle Enerji Yatırım A.Ş.Mert Can Sapaz

In-app purchases

None

oncharge

No in-app purchases

4 purchases

Voltara

Subscriptions2
  • Voltara Pro (Monthly)$3.991 Month
  • Voltara Pro (Yearly)7 Days trial$19.991 Year
One-time2
  • Voltara Pro (Lifetime launch price)$29.99
  • Voltara Pro (Lifetime)$49.99

Questions

Is oncharge free?
oncharge is free to download, with no in-app purchases.
Is Voltara free?
Voltara is free to download, with in-app purchases available.
Do oncharge or Voltara have ads?
Voltara shows ads; oncharge does not.
Which is updated more often, oncharge or Voltara?
oncharge ships an update weekly, and Voltara every 5 weeks. Most recently, oncharge was updated on November 7, 2026 and Voltara on November 10, 2026.

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