The cheapest place to run a 512 MB app in 2026: $4 on DigitalOcean, $5 on Railway, $7 on Render

One process, 512 MB of RAM, always on, light traffic: the smallest production shape there is. Priced on the three platforms people usually compare, it costs $4.00 a month on a DigitalOcean Droplet, $5.00 on Railway's Hobby plan and $7.00 on Render's Starter instance. The gap between the cheapest and the most expensive is $36 a year, which is small enough that the decision should be made on operations rather than on price — but the prices still need to be right, because two of the three are not what they look like.

One small service, three invoices

What each price actually buys

The Droplet's $4 is the only flat price in the table. It buys a virtual machine with 1 vCPU, 10 GiB of SSD and 500 GiB of outbound transfer, and it does not change if the app works harder that month. In exchange, nothing is managed: the OS image is minimal and yours to patch, TLS is yours to renew, and a deploy is whatever script you wrote. DigitalOcean bills per second with a 60-second minimum, so a Droplet created and destroyed an hour later costs a fraction of a cent.

Railway's $5 is a floor rather than a price. Hobby is a $5 minimum usage plan that includes $5 of usage, and 512 MB of memory alone costs about $5.00 over a 30-day month. That means the minimum and the memory bill cancel out exactly, leaving nothing for CPU or egress, so any real work pushes the total above $5. At 0.02 vCPU averaged over the month the bill is about $5.65; at 0.1 vCPU it is about $7.25 (calculated 2026-10-25).

Render's $7 is flat and predictable, and it is the third rung of a ladder that starts at free. The free instance has the same 512 MB but spins down after 15 minutes without inbound traffic and takes about a minute to wake, so it is not always-on. $7 buys the same memory with the sleeping removed, plus 5 GB of bandwidth before the $0.15 per GB overage starts.

How we measured it

All three pricing pages were fetched on 2026-10-25: Render's for the $7 compute tier and its 5 GB Hobby allowance, Railway's for the $5 minimum and the per-second memory and CPU rates, and DigitalOcean's Droplet pricing for the $4 512 MiB tier and its 500 GiB of transfer. Railway's figures required arithmetic — memory and CPU seconds multiplied by 2,592,000 — and the vCPU averages are stated assumptions, not published numbers. No app was deployed on any of the three.

What changes in practice

The database is bigger than the app on every platform. DigitalOcean's managed database starts at $15 a month, Render's Postgres at $6 for 256 MB and $19 for 1 GB, and Railway bills a database as just another service at the same rates, which for 256 MB plus a little CPU is roughly $4 to $6. A $4 app with a $15 database is a $19 project, and that reversal surprises people who compared only the compute line.

Railway's metering cuts both ways. A service that is genuinely idle most of the day is cheap in CPU terms and lands near its $5 floor, while a service that does real work pays for it — the same 512 MB costs $5.65 or $7.25 depending on how busy it is. Render charges $7 whether the CPU sits at 2 percent or 40 percent, which is worth more than the $1.35 difference if the load is spiky and hard to predict.

The Droplet's hidden cost is time, and it is not small. A $4 Droplet needs a firewall, a reverse proxy, certificate renewal and a deploy path before it serves anything; that is a day of work once and perhaps an hour a month afterwards. At any reasonable hourly rate the first year of a Droplet costs more than three years of Render's $7 plan, which is why the cheapest line item is rarely the cheapest choice.

Bottom line

Pay $4 for the Droplet if you want a flat bill and are willing to own the server, $5 to $7.25 on Railway if the app's CPU use is low and variable, and $7 on Render if you want the same price every month with nothing to administer. For one 512 MB service with modest traffic, Render at $7 is the least surprising invoice and DigitalOcean at $4 is the cheapest by $36 a year (calculated 2026-10-25).