Senline vs Left
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Senline
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• Offline-first • Sync via iCloud • Currency converter & Travel Mode • AI input and insights with OpenAI API Key • Multiple lists • Widgets • Export/Import to CSV Designed for speed, simplicity, and peace of mind.
Left
This app simplifies daily budgeting by focusing on a single number: what's left to spend after setting aside essential bills. It offers a minimalist approach to personal finance, ideal for those overwhelmed by complex budgeting tools.
- Single daily spending number
- Envelope for big bills
- Customizable spending periods
- Minimalist interface
- No bank syncing
- No categories
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One number tells you what's left to spend today. One envelope holds the big bills — rent, subs, loans. That's it. — — — Left. is a daily budget tracker for people who tried YNAB and gave up, tried spreadsheets and got bored on day three, tried mental math and lost track on day one. It works on a single, honest idea: pour everything you have into a period, set aside the big bills into an envelope, and what remains is yours to spend, divided by days. One screen. One number. No charts. No categories. No streaks, no badges, no nudges. Nothing to maintain. When you need to dip into the reserve — hold the envelope. The envelope breaks open. You take what you need. It seals back. — — — How it works: 01 Pick a period — a month, a week, three days, a trip. 02 Pour in the amount — everything you have for that period. 03 Set the envelope aside — the big bills that have to wait. 04 See what's left — one number on the home screen, every day. — — — What's not in here: — No syncing with banks. — No machine learning categorisation. — No social feed of how friends spend. — No subscription, no upsell, no premium tier. What is in here: — A blank page that opens on a number. — A reserve sealed in an envelope, opened with a long press. — A ledger that remembers every tap. — One hand. One thumb. One number a day. — — — Left. by Koodalabs
Screenshots
Verdict
Senline and Left are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on September 10, 2026 and September 8, 2026 respectively.
| Parameter | Senline | Left |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.6 | 18.0 — better |
| Further details — not scored | ||
| Size | 107 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Artem Zasypalov | Koodalabs LLC |
In-app purchases
Senline
No in-app purchases
Left
No in-app purchases
