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Convex alternatives — ranked for your stack

Leaving Convex? The other database options ranked at your usage, budget and constraints with verified dated pricing — plus when Convex is still the right call.

Prices verified 2026-07-15 against official pricing pages · fit weights are our estimates (see methodology) · share the URL to share your configuration

As of Jul 2026, with 5,000 monthly active users, 5 GB database size, 40 GB monthly egress, 1,000 db operations per user / month, 24 compute active hours / day, a $50 budget for this slot, Supabase ranks first for these inputs at 95% fit and a StackSays-estimated $25.00/month (Firebase (Firestore): 89% fit, $7.30/month). Fit weights are our estimates; prices trace to official pages. Change any input below and the verdict recomputes.

Your situation

The verdict updates as you move these.

Clear pick for your inputs

Supabasefit 95% · est $25.00/mo

Managed Postgres bundled with auth, realtime, storage and edge functions

vs Firebase (Firestore): fit 95% against 89%, est $25.00 against $7.30 per month

Supabasefit 95%
$25.00/mo
Firebase (Firestore)fit 89%
$7.30/mo
Neonfit 89%
$21.08/mo
Tursofit 81%
$0/mo
MongoDB Atlasfit 80%
$8.00–$30.00/mo
PlanetScalefit 78%
$15.00+/mo

Comparing 6 tools head-to-head. Open the full field (7 options) →

The decision, in plain words

For a solo builder at 5,000 monthly active users and a $50.00/mo budget for the database slot, Supabase leads at 95% fit and $25.00/mo. The two rules doing the work: budget fit (~$25/mo is 50% of your $50/mo budget); batteries included (Bundles auth, file storage, realtime — fewer services to glue at team size 1).

The gap to Firebase (Firestore) (89% fit) is wide at these inputs — you'd need to change your requirements, not your taste, to flip it.

Generated from the calculation above — every number traces to the sourced data; nothing here is written by an AI making things up.

Why Supabase scores 95%

Budget fit (weight 30, our estimate) — ~$25/mo is 50% of your $50/mo budget+30
Batteries included (weight 12, our estimate) — Bundles auth, file storage, realtime — fewer services to glue at team size 1+12
Exit cost (weight 4, our estimate) — Standard Postgres — dump and restore anywhere+4
Ecosystem maturity (weight 8, our estimate) — established — our estimate from ecosystem age, docs and hiring pool+8
Free-tier runway (weight 10, our estimate) — Free tier exists (500MB database, 50K MAU, 1GB file storage, 5GB egress, 2 projects) — a cheap staging/dev lane even after you outgrow it+4
Total (lines sum exactly)58
Possible range −64…+64 (sum of active rule weights) · fit % = (total + max) / (2 × max)(58 + 64) / 128 = 95%

How the $25.00/mo estimate is calculated

Pro plan base — includes 8GB database storage, 250GB egress, 100,000 auth mau, 100GB file storage$25.00
Monthly total (lines sum exactly)$25.00

What could change this verdict

Cost risk

Estimated now (StackSays estimate, not your final bill)$25.00/mo · Pro plan
Free-tier statusFree tier exceeded (database storage 5GB > 0.5GB cap)
Next known billing thresholdat 8GB database storage, overage starts ($0.125/GB)

Official prices verified 2026-07-15; calculation is deterministic code over those prices.

At a glance

ToolFree tierPaid entryVerified
Supabase500MB database, 50K MAU, 1GB file storage, 5GB egress, 2 projectsPro plan $25/mo2026-07-15
Neon0.5GB storage + 100 compute-hours per project, 5GB egress, 60K auth MAUPay-as-you-go — Compute billed per CU-hour ($0.106); suspended compute costs $0; storage $0.35/GB-month2026-07-15
Firebase (Firestore)1GiB Firestore, 50K reads / 20K writes / 20K deletes per day, 50K auth MAU, 10GiB egressPay-as-you-go — Firestore nam5 rates: $0.06/100K reads, $0.18/100K writes, $0.18/GiB storage; deletes ($0.02/100K) not modeled. Ops derived from your per-user activity input (80/20 read/write split, our estimate)2026-07-15
Turso100 databases, 5GB storage, 500M rows read / 10M rows written per monthDeveloper plan $4.99/mo2026-07-15
PlanetScaleNo free tierPS-5 HA cluster $15/mo2026-07-15
MongoDB Atlas512MB storage, shared CPU/RAM, ~100 ops/sec capFlex tier $8/mo2026-07-15
Where did you land?anonymous, one click

Data sources

ToolSourceVerified
SupabaseSupabase pricing page2026-07-15
NeonNeon pricing page2026-07-15
Firebase (Firestore)Firebase pricing page2026-07-15
TursoTurso pricing page2026-07-15
PlanetScalePlanetScale pricing page2026-07-15
MongoDB AtlasMongoDB Atlas pricing page2026-07-15

A monitor re-checks these pages for changes; when a vendor moves a price, the date updates and every verdict recomputes.

Keep deciding

Compare head-to-head

Supabase vs Firebase — for your app, not in general →Supabase vs Neon — platform or pure Postgres? →Turso vs Neon — for your app, not in general →PlanetScale vs Convex — for your app, not in general →Firebase vs Convex — for your app, not in general →Firebase vs Neon — for your app, not in general →

Alternatives

Firebase alternatives — ranked for your stack →MongoDB alternatives — ranked for your stack →PlanetScale alternatives — ranked for your stack →Supabase alternatives — ranked for your stack →Neon alternatives — ranked for your stack →Turso alternatives — ranked for your stack →

Migration paths

Migrate from Firebase to Supabase — worth it, in months →Migrate off MongoDB — worth it, in months →Migrate off Firebase — worth it, in months →Migrate off PlanetScale — worth it, in months →Migrate off Supabase — worth it, in months →Migrate off Neon — worth it, in months →

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Best database for RAG →Best database for an AI SaaS →Best database for realtime / live sync →Cheapest database at scale →Best backend for a mobile app →
← All Which database should I use?Databases & Backend channel →