Comparison

O2O Renewables vs Sync

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

Head to head
About

O2O Renewables

Features
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Mattermost is workplace messaging from behind your firewall. - Discuss topics in private groups, one-to-one or team-wide - Find what you're looking for with full text search, filters and #hashtags - Easily share images, video, audio and files - Personalize your experience with custom colors, formatting and fonts - Connect in-house systems with webhooks and Slack-compatible integrations To use this app, you need a "Server URL" from a Mattermost server. To host your own server go to https://about.mattermost.com/download Find the Terms of Service for this app here: http://www.mattermost.com/terms/ This is a reference implementation of an open source Mattermost app available at: https://github.com/mattermost/mattermost-mobile

About

Sync

This app turns meaningful clock moments into a simple way to connect with loved ones. Catch a magic minute and send it to someone special, fostering connection without social media pressure. It's a quick ritual to show you're thinking of them.

Highlights
  • Catch meaningful clock moments
  • Send instant connection pings
  • Receive and respond to pings
  • Track shared moments
  • Invite friends via text
  • No contact upload required
Features
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A tiny ritual to stay connected with loved ones through patterns in time. Some minutes are too perfect to keep to yourself. 11:11. 12:34. 12:21. 22:22. A few times each day the clock lands on something beautiful — and for one minute, it belongs to you and the people you care about. Sync turns that tiny moment into a reason to reach out. Catch a magic minute, send it to someone you love, and you've said "thinking of you" in two taps — no feeds, no scrolling, no pressure. HOW IT WORKS - Catch the moment — when the clock hits a meaningful minute (a repeat like 11:11, a run like 12:34, a palindrome like 12:21, a mirror like 13:13), the SEND button lights up. - Send it to the people you love — pick your friends. They get a gentle ping and 30 minutes to catch it back. - Stay close — when someone catches it back you both score a little, but the real win is staying in touch with people you actually know. - Look back — your Discoveries log keeps every rare minute you've shared and who shared it back. WHY PEOPLE LOVE IT - A 60-second ritual, not another feed to scroll. - Stay close to the people you already text. Add friends from your contacts, or anyone by name and number with a full country-code picker — no contacts permission required. - Invite the rest. Not on Sync yet? Send a one-tap text invite. - A real reason to glance at the clock. Suddenly 11:11 means someone. Your contacts stay on your device — Sync never uploads anyone you don't add as a friend. Sync is free and made for the people you love. Catch the next magic minute and stay connected.

Screenshots

O2O Renewables2 screens
Sync4 screens

Verdict

The call

The clearest difference is update cadence: Sync at every 8 days against O2O Renewables's every 4 months. On price, ads, in-app purchases 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

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

O2O Renewables ships an update every 4 months, Sync every 8 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard1 real difference · 9 level
O2O Renewables versus Sync: the parameters behind the verdict, then further details
ParameterO2O RenewablesSync
PriceFreeFree
Rating—5.0 (5 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—5 — better
Update frequencyEvery 4 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS16.015.1 — better
Further details — not scored
Size82 MB48 MB
Age rating4+4+
DeveloperEcopower Academy Northern Europe ABSilverGrid Technology LLC

In-app purchases

None

O2O Renewables

No in-app purchases

None

Sync

No in-app purchases

Questions

Is O2O Renewables free?
O2O Renewables is free to download, with no in-app purchases.
Is Sync free?
Sync is free to download, with no in-app purchases.
Do O2O Renewables or Sync have ads?
Neither O2O Renewables nor Sync shows ads.
Which is updated more often, O2O Renewables or Sync?
O2O Renewables ships an update every 4 months, and Sync every 8 days. Most recently, O2O Renewables was updated on November 3, 2026 and Sync on November 5, 2026.

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