Opportunities › Open-source accounting systems for Django applications › Proposed app
Tallybook
Open-source double-entry ledger and reports you embed in your Django app
- Score
- 44
- confidence 42
- Evidence
- 1
- items on the page
- Rivals
- 0
- named in sources
- First version
- 35 d
- estimate
- Type
- Desktop app
- PWA: runs in the browser, installs on Mac and Windows
- Market since
- no product yet
- New market · AI estimate
ScreensConcept
Desktop app: Django developers and finance reviewers read reports, post transactions, and approve adjustments with full audit trails—sustained keyboard and analytical work. Sample screens on a computer, in the proposed brand. Their numbers are sample data.
Accounts
Books balanced$48,210.55
About this appAI proposal
Tallybook is a double-entry accounting ledger for Django applications. Developers add it to a project, define accounts in code, and post balanced transactions through a clear API. Reports and a small review app come with it.
It is for Django developers and businesses that need bookkeeping and financial analysis inside their own product, and don't want to build a ledger from scratch or depend on a closed accounting API.
The core is open source, so your data stays in your own database and you can read and change every rule. Paid plans add hosted reporting, a managed admin app and support.
- Tagline
- A double-entry ledger that lives inside your Django app.
- Voice
- PrecisePlainCalm
- Why this name
- Tallybook joins 'tally', the old act of counting, with 'book', as in books of account. Two plain words, easy to say, and it points at bookkeeping.
In the first version
Members say which features they would use. It tells PWAS what people want; it changes no score.
Django-native double-entry ledger
Accounts, journals and entries as Django models. Every transaction must balance, or it is rejected.
No member yet
Clear posting API
Post, reverse and query transactions from Python or REST, with idempotency keys to prevent duplicates.
No member yet
Financial reports
Trial balance, balance sheet, income statement and account history, filterable by date and tag.
No member yet
Custom workflows
Hooks and signals let you add approvals, invoicing or payout rules without forking the core.
No member yet
Brand identityAI proposal
Check the name against trademark registers before using it.
Palette
#1F5C4ALedger Green · primary#F6F3EAPaper · surface#1B2421Ink · text#C48A2CBrass · accent#B5533CClay · data (credits/alerts)
Typography
Aa
Tallybook
ABCDEFGHIJKLMNOPQRSTUVWXYZ 0123456789
A double-entry ledger that lives inside your Django app.
PricingAI proposal
The material gives no competitor prices. These tiers are a starting point to test, based on the monetization paths it lists: hosting, support and implementation services.
Open source
Free
- Django ledger package
- Posting API and reports
- Self-hosted, community support
Team
$49 a month
- Hosted review app (PWA)
- Scheduled report exports
- Email support
Business
$299 a month
- Managed hosting and backups
- Approval workflows
- Priority support
- Implementation help
Would you pay Team · $49 a month?
Your answer tells PWAS which prices people accept. It changes no score.
No answers yet.
What it could be worthEstimate
What a software business making this much sells for today, from real deals. Pick a monthly revenue.
If it makes
Worth about
$194,000
Sale range $132,000 to $263,000
$120,000 a year in revenue
From 87 software businesses listed and sold on Empire Flippers in the last year, revenue vetted by the broker: they sell for about 19× their monthly revenue, most between 13× and 26×.
Measured on profit, the middle deal is 32× monthly net profit: about 2.7 years of profit.
An estimate, not an offer or financial advice. A real price depends on profit, growth, churn, how much of the work is the owner's, and the buyer.
How it would growAI proposal
How the product would reach new customers through its own use, and how the first ones would be found. A plan to test, not a result.
- Built-in loop
- Visible inside customers’ products. The package is installed in customers' apps. Its docs, admin pages and exported reports can carry a small 'Built on Tallybook' mention, and developers who see it can find the project.
- Do they become customers?
- Those who see the mention are mostly other Django developers, who can become users or buyers. Test whether open-source installs turn into paid hosting or support requests.
- First customers
- Small Django teams building a marketplace, billing or fintech-style product who need an internal ledger and have two to ten developers.
- Where to reach them
- Django community: Post tutorials and a sample project in the Django forum, newsletters and conference talks.
- GitHub and PyPI: Publish a documented package with a quick-start so developers can try it in an hour.
- Direct outreach: Contact teams whose public repositories show custom ledger tables and offer free setup help.
- First milestone
- Ten teams run it in a real project, and three pay for hosting or support within 90 days.
Why people already pay for this
- VerifiedGitHub repository gained 1389 stars in 2910 days
Tech stack
Every proposal builds on the same PWA base, installable from the browser on any phone or computer. Dashed boxes are what this app adds.
- AppNext.js and TypeScript
- PWAManifest and service worker
- UITailwind CSS
- Data and authSupabase Postgres
- PaymentsStripe
- EmailResend
- HostingVercel
- This app · Django packagePython library on PyPI with Django modelsThe product is embedded in Django projects, so the core ships as an installable package.
- This app · Ledger APIDjango REST framework serviceHosted customers and non-Django clients need an API to post and query entries.
RisksAI inference
- CommercialDevelopers may prefer a free package and never pay. Demand for paid hosting or support over the open core is untested.
- TechnicalMoney handling is unforgiving. Rounding, currencies, concurrency and reversals need thorough tests before anyone trusts it.
- RegulatoryUsers may assume the ledger meets tax or audit rules in their country. Those rules differ and are outside the first version.
- CommercialThe evidence is one GitHub repository's star growth. It shows interest in the idea, not willingness to pay.
Everything marked AI proposal or AI inference was written by a model from the evidence on the opportunity page. The proposed name must be checked against trademark registers before it is used.