Comparison

CHAEVI vs VIVA Studio

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

Head to head
About

CHAEVI

This app simplifies electric vehicle charging by allowing users to find, reserve, and pay for charging stations. It provides real-time charging status and eliminates the need for multiple physical charging cards.

Highlights
  • Find charging stations
  • Reserve charging spots
  • Pay for charging
  • Real-time charging status
  • Eliminates multiple charging cards
Read full description

Charge up like a superhero with the Chaevi Mobile App - the ultimate tool for hassle-free charging! Tired of carrying multiple pocket cards? Say goodbye to the inconvenience with Chaevi Mobile App - the perfect sidekick for EV drivers! Join the Chaevi-vengers and become a charging hero! Our mobile app makes finding, reserving, and paying for charging stations a breeze! No more waiting and wondering where to charge! The Chaevi Mobile App puts real-time charging status and payment in one convenient place! Don't let charging be a hassle - power up your EV with the Chaevi Mobile App! It's the perfect charging companion for all EV drivers!

About

VIVA Studio

Read full description

VIVA Studio lets you design and send screens to compatible VIVA e-paper tags. • Choose designs that match your tag’s screen size and colors • Start with designs for price labels, name badges, meeting room signs, and desk nameplates • Edit the position, size, and color of text, shapes, and images • Use multiple fonts and rotate images • Continue editing your saved designs • Connect by NFC or device search, then send your design over Bluetooth • Refresh the connected display or show its initial screen • Use the app in Korean, English, Japanese, or Spanish Designs are saved on your device, and you can use the editor without creating an account. Sending designs and refreshing displays requires a compatible VIVA tag and a Bluetooth-enabled device. NFC is required only for NFC connection. Available screen sizes and colors depend on the connected tag model.

Screenshots

CHAEVI4 screens
VIVA Studio4 screens

Verdict

The call

The clearest difference is ads: VIVA Studio at none against CHAEVI's shown. VIVA Studio also leads on update cadence (daily vs every 2 weeks) and device support (4 vs 2). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CHAEVI ships an update every 2 weeks, VIVA Studio daily. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
CHAEVI versus VIVA Studio: the parameters behind the verdict, then further details
ParameterCHAEVIVIVA Studio
PriceFreeFree
Rating2.6 (7 ratings) — better—
Positive reviews25.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 2 weeksDaily — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS16.015.0 — better
Further details — not scored
Size18 MB254 MB
Age rating4+4+
DeveloperChaevi. co., Ltd4SEILS

In-app purchases

None

CHAEVI

No in-app purchases

None

VIVA Studio

No in-app purchases

Questions

Is CHAEVI free?
CHAEVI is free to download, with no in-app purchases.
Is VIVA Studio free?
VIVA Studio is free to download, with no in-app purchases.
Do CHAEVI or VIVA Studio have ads?
CHAEVI shows ads; VIVA Studio does not.
Which is updated more often, CHAEVI or VIVA Studio?
CHAEVI ships an update every 2 weeks, and VIVA Studio daily. Most recently, CHAEVI was updated on November 3, 2026 and VIVA Studio on October 31, 2026.

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