Mizani Core vs spreadsheets & manual passbooks
Last reviewed 25 June 2026
Short answer
For a brand-new group of a few people meeting in person, a spreadsheet or passbook can work. It breaks down as the group grows: only the treasurer sees the numbers, nothing reconciles to the real mobile-money balance, and there's no second-officer check on payments.
Almost every savings group starts the same way: a treasurer's passbook or a shared spreadsheet, updated by hand after each meeting. It costs nothing and everyone understands it — which is exactly why it lasts longer than it should.
The trouble is trust. Only the treasurer sees the full picture, nothing checks the book against the group's real mobile-money balance, and one person effectively controls the record. Small errors go unnoticed until share-out, when they turn into arguments. Mizani Core keeps the same simple idea — one record for the group — but puts it on every member's phone, reconciles it to the real balance, and requires a second officer to approve money moving.
Feature by feature
| Feature | Mizani Core | Spreadsheets & manual passbooks |
|---|---|---|
| Reconciles to mobile moneyChecks the book against the group's real mobile-money balance so nothing quietly goes missing. | YesAgainst the real balance | No |
| Two-person approvalMoney only moves when a second officer signs off — no single point of trust. | Yes | No |
| Per-member statementsEvery member sees their own savings, loans and shares on their own phone. | YesOn every member's phone | NoTreasurer only |
| Loans & arrearsLend at the rates you set, track repayments, guarantors and arrears. | YesRates, guarantors, arrears | PartialBy hand |
| Cycle share-outSplit the pot fairly at cycle-end with maths everyone can check. | Yes | PartialManual counting |
| Works for members without smartphonesOfficers manage members offline; each can claim their record later by phone. | YesManaged members + claim later | YesPaper works offline |
| Regulatory complianceFor registered SACCOs: tracks your prudential ratios, builds the regulatory returns, keeps a compliance calendar and audit-ready registers — tuned to your country's SACCO rules. | YesCountry-aware (UG, RW) | No |
| WhatsApp updatesReminders and confirmations land in the chat the group already uses. | Yes | No |
| Local languagesUsable in the languages members actually speak. | PartialEnglish; more in progress | YesAny language |
Where spreadsheets & manual passbooks works
- No software to learn and nothing to pay for
- Works with no smartphones and no internet
- Everyone understands a notebook
Best for: A brand-new group of a few people who meet in person every week.
Where it falls short
- Only the treasurer can see the numbers — members have to take it on trust
- Nothing checks the book against the real mobile-money balance, so errors and gaps go unnoticed
- No second-officer approval; a single person controls the record
- Share-out day means hours of manual counting and frequent disputes
Frequently asked questions
Is a spreadsheet good enough for a savings group?
For a brand-new group of a few people meeting in person, a spreadsheet or passbook can work. It breaks down as the group grows: only the treasurer sees the numbers, nothing reconciles to the real mobile-money balance, and there's no second-officer check on payments.
Why move from a passbook to Mizani Core?
Mizani Core keeps the same single-record idea but puts each member's statement on their own phone, reconciles the book to the group's real mobile-money balance, and requires two officers to approve money movements — removing the single point of trust a passbook depends on.
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