SummerIn vs Sunday Lineups
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SummerIn
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SummerIn is the social home for your summer cohort. Find people in your city, see who is around, join chats, and turn “we should hang” into actual plans. Build a profile that gives people a reason to say hi: photo, bio, prompts, and a short intro video. Browse the directory, discover people with similar energy, and start conversations without making it weird. Inside SummerIn you can: - Find other interns in your city or cohort - Join group chats for plans, interests, and spontaneous ideas - Discover small events, hangouts, and mixers - Open lightweight intern tools made for your community - Share photos, comments, and updates from the summer - Block or report content that does not belong Summer is short. SummerIn helps the good parts happen sooner: better people, easier plans, and more reasons to show up.
Sunday Lineups
This social music app lets you share your weekly four-song playlist with friends. See what your connections are listening to and build a profile of your favorite tracks over time. Connect streaming services for song suggestions.
- Post weekly four-song lineups
- View friends' lineups in a shared feed
- Build a profile with past lineups
- Like and comment on lineups
- Find and add friends
- Connect Spotify/Apple Music for suggestions
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Lineup is a music app built around a simple weekly ritual: pick four songs, post your lineup, and see what your friends are listening to. Every week you put together a lineup of four tracks. Once you post yours, your friends' lineups open up in your feed, so everyone shares before anyone scrolls. No lurking, no endless algorithmic feed, just the people you know and the music they're into that week. What you can do: - Post a new four-song lineup every week - See your friends' weekly lineups in a shared feed - Build a profile with a timeline of your past lineups and your all-time favorites - Like and comment on lineups through the week - Find and add friends - Connect Spotify or Apple Music to pull in song suggestions while you build - Get notified when friends like or comment
Screenshots
Verdict
The clearest difference is update cadence: SummerIn at every 3 days against Sunday Lineups's every 3 weeks. 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SummerIn ships an update every 3 days, Sunday Lineups every 3 weeks. The most recent releases landed on October 7, 2026 and September 29, 2026 respectively.
| Parameter | SummerIn | Sunday Lineups |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 17.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 72 MB | 48 MB |
| Age rating | 4+ | 12+ |
| Developer | A1Base Inc | Karen Vicknair |
In-app purchases
SummerIn
No in-app purchases
Sunday Lineups
No in-app purchases









