Let'ss vs Sinteza
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Let'ss
This app streamlines group event planning by combining the flexibility of group chats with the efficiency of calendar events. Hosts suggest times and places, and group members can vote on options or offer new suggestions. It aims to help groups reach decisions faster with fewer notifications.
- Time and place suggestions
- Group voting system
- Integrated chat for discussions
- Optional guest invitations
- Calendar export and reminders
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Let's helps groups plan events efficiently. Friends, family, and professionals -- ultimately, you make a decision on a time and place. Using group texts to make decisions allows everyone to chime in but can be inefficient. On the other hand, making a calendar event is efficient but eliminates discussion. Let's combines the flexibility of group texts with the efficiency of calendar events. With Let's, a host suggests a time and place, and then group members can offer new suggestions and vote. The host makes an informed decision. Everyone reaches a decision faster and with less notifications. Feature: Time and Place Suggestions The host can enable suggestions for time and place. Everyone can make suggestions. If you know where you want to go, disable place suggestions and only focus discussion on time. Feature: Voting Instead of sending texts "Yes", "That works for me" or "No", "Sorry I can't make that", just vote. Get to the point and with less mess and less notifications. Feature: Chat For everything else, there is a chat. Whose car are you taking? Running late? Have a picture to share? Use the chat. Feature: People Suggestions Leave people suggestions on and guests can invite other people. Turn it off if you want to keep it quiet. Feature: Calendar Integration When an event is confirmed, it is exported to your calendar, so you can track it and get a reminder. Situation: Quick Event If you want to get started quickly and are open to ideas, make an event with only a title "Dinner this weekend". Leave time and place suggestions on and then anyone can throw out ideas -- just like in real life. Many fun features to come. Submit a request! We are excited to hear your ideas. Email me: colin@yeahlets.com.
Sinteza
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Stop saving advice. Start making sense of it. One video recommends a product. Another warns against it. A useful post is buried somewhere in your saved links. Sinteza brings your research into one private workspace so you can compare the advice, understand the trade-offs and find your way back to the evidence. ONE QUESTION. YOUR CONTEXT. Create a project around the decision you’re making. Keep your goals, priorities and notes beside the sources, so the research stays relevant to you. COMPARE THE ADVICE Add supported public videos and social posts. See where sources agree, where they disagree and what information is still missing. AI-assisted findings help you explore the material; they don’t replace your judgement. KEEP THE EVIDENCE Open the original source and available timestamps behind a finding. Revisit the context instead of relying on an isolated summary. TURN RESEARCH INTO A BRIEF Bring findings, evidence, trade-offs and gaps into a useful decision aid. Research products, careers, travel, education and more across 12 spaces. TRY IT WITH 3 SOURCE CREDITS Your free allowance includes 3 lifetime credits for successfully processed sources. Optional auto-renewing Sinteza+, Nomad and Pro subscriptions include 10, 20 and 60 successful-source credits per rolling 30 days, with monthly or yearly billing. Current localized prices and subscription controls are shown in the app. Failed, duplicate and unusable sources do not consume a credit. An account is required. Source availability and processing depend on the provider. AI can make mistakes. Check original sources and use your own judgement, especially for important decisions. Choose a question. Add a source. Get a clearer picture. Sinteza asks permission before sending selected source information and project context to its research processors. You can turn off new AI processing in settings. Privacy: https://sinteza.app/privacy Terms: https://sinteza.app/terms Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Let'ss at none against Sinteza's 7. Sinteza's advantage is update cadence (weekly vs monthly). On price, ads, 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
Both are free to download. Sinteza sells 7 in-app purchases, starting at $4.99 per month. Let'ss asks for nothing beyond the download.
Let'ss ships an update monthly, Sinteza weekly. Both last shipped on November 6, 2026.
| Parameter | Let'ss | Sinteza |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (8 ratings) — better | — |
| Positive reviews | 71.4% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Monthly | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 76 MB | 287 MB |
| Age rating | 4+ | 4+ |
| Developer | Yeah Let's, Inc | Aisle Seat One |
In-app purchases
Let'ss
No in-app purchases
Sinteza
- Sinteza+$4.991 Month
- Nomad$9.991 Month
- Pro$29.991 Month
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- Sinteza+$49.991 Year
- Nomad$99.991 Year
- Pro$299.991 Year
- 10 Source Credits$5.99







